[ZEPPELIN-757] Ordering dropdown menu items alphabetically.
[ZEPPELIN-757] Ordering dropdown menu items alphabetically.

### What is this PR for?
Fixing documentation.

### What type of PR is it?
Documentation

### Todos
N/A

### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-757

### How should this be tested?
Follow the steps in https://github.com/apache/incubator-zeppelin/blob/master/docs/README.md to build the documentation.

### Screenshots (if appropriate)
![screen shot 2016-03-22 at 8 28 00 am](https://cloud.githubusercontent.com/assets/1072079/13957001/1b316802-f008-11e5-9f9d-9f27d6dbfa12.png)

### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No

Author: Jiri Simsa <jiri.simsa@gmail.com>

Closes #790 from jsimsa/fix and squashes the following commits:

04ceac7 [Jiri Simsa] Ordering dropdown menu items alphabetically.

jongyoul/zeppelin,vipul1409/zeppelin,doanduyhai/incubator-zeppelin,hammertank/zeppelin,prabhjyotsingh/zeppelin,lobamba/zeppelin,cjmatta/incubator-zeppelin,mwpenny/zeppelin-esri,minahlee/incubator-zeppelin,samuel-pt/incubator-zeppelin,cquptEthan/incubator-zeppelin,mwkang/zeppelin,jlagarden/zeppelin,doanduyhai/incubator-zeppelin,rerngvit/incubator-zeppelin,Altiscale/incubator-zeppelin,zetaris/zeppelin,tinkoff-dwh/zeppelin,onkarshedge/incubator-zeppelin,Leemoonsoo/zeppelin,benoyantony/zeppelin,astroshim/incubator-zeppelin,joroKr21/incubator-zeppelin,vgmartinez/incubator-zeppelin,sergeymazin/zeppelin,yu74n/zeppelin,benoyantony/zeppelin,rerngvit/incubator-zeppelin,pravin-dsilva/zeppelin,radicalbit/incubator-zeppelin,tzolov/incubator-zeppelin,hammertank/zeppelin,Nova-Boy/zeppelin,prabhjyotsingh/incubator-zeppelin,prasadwagle/incubator-zeppelin,jongyoul/incubator-zeppelin,1ambda/zeppelin,soralee/zeppelin,apache/zeppelin,AlexanderShoshin/zeppelin,minahlee/incubator-zeppelin,IceKhan13/zeppelin,sohaibiftikhar/zeppelin,samuel-pt/incubator-zeppelin,cfries/zeppelin,YuanGunGun/zeppelin,sravan-s/zeppelin,soralee/zeppelin,vgmartinez/incubator-zeppelin,vgmartinez/incubator-zeppelin,mfelgamal/zeppelin,vrlo/zeppelin,astroshim/zeppelin,prabhjyotsingh/zeppelin,sagarkulkarni3592/incubator-zeppelin,lobamba/zeppelin,apache/incubator-zeppelin,granturing/incubator-zeppelin,sergeymazin/zeppelin,datalayer/zeppelin,mwpenny/zeppelin-esri,SachinJanani/zeppelin,sctincman/zeppelin,optimizely/incubator-zeppelin,yorek/zeppelin,zetaris/zeppelin,wary/zeppelin,1ambda/zeppelin,lobamba/zeppelin,datalayer/zeppelin,joroKr21/incubator-zeppelin,apache/zeppelin,benoyantony/zeppelin,herval/zeppelin,yu74n/zeppelin,spacewalkman/incubator-zeppelin,cfries/zeppelin,rlugojr/incubator-zeppelin,prasadwagle/incubator-zeppelin,volumeint/zeppelin,fogbeam/zeppelin_mirror,Leemoonsoo/incubator-zeppelin,zjffdu/zeppelin,cquptEthan/incubator-zeppelin,vipul1409/zeppelin,yu74n/zeppelin,chilang/zeppelin,prabhjyotsingh/zeppelin,tillrohrmann/incubator-zeppelin,doanduyhai/incubator-zeppelin,herval/zeppelin,prabhjyotsingh/zeppelin,hammertank/zeppelin,Madhuka/incubator-zeppelin,digitalreasoning/incubator-zeppelin,apache/incubator-zeppelin,ravicodder/incubator-zeppelin,Madhuka/incubator-zeppelin,pellmont/zeppelin,doanduyhai/incubator-zeppelin,rerngvit/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,granturing/incubator-zeppelin,Leemoonsoo/incubator-zeppelin,radicalbit/incubator-zeppelin,1ambda/zeppelin,zjffdu/zeppelin,jlagarden/zeppelin,hkropp/incubator-zeppelin,astroshim/zeppelin,datalayer/zeppelin-datalayer,brigade/incubator-zeppelin,onkarshedge/incubator-zeppelin,radicalbit/incubator-zeppelin,lobamba/zeppelin,prabhjyotsingh/incubator-zeppelin,vipul1409/zeppelin,spacewalkman/incubator-zeppelin,pravin-dsilva/zeppelin,datalayer/zeppelin-datalayer,samuel-pt/incubator-zeppelin,rconline/zeppelin,spacewalkman/incubator-zeppelin,digitalreasoning/incubator-zeppelin,SachinJanani/zeppelin,soralee/zeppelin,anthonycorbacho/incubator-zeppelin,zjffdu/zeppelin,sohaibiftikhar/zeppelin,apache/zeppelin,sergeymazin/zeppelin,pravin-dsilva/zeppelin,ravicodder/incubator-zeppelin,Nova-Boy/zeppelin,IceKhan13/zeppelin,rlugojr/incubator-zeppelin,namanmishra91/zeppelin,sohaibiftikhar/zeppelin,rerngvit/incubator-zeppelin,YuanGunGun/zeppelin,hkropp/incubator-zeppelin,namanmishra91/zeppelin,Leemoonsoo/zeppelin,cquptEthan/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,mwkang/zeppelin,wary/zeppelin,Nova-Boy/zeppelin,SarunasG/zeppelin-oidc,Altiscale/incubator-zeppelin,namanmishra91/zeppelin,SachinJanani/zeppelin,nikste/incubator-zeppelin,karuppayya/zeppelin,r-kamath/zeppelin,tillrohrmann/incubator-zeppelin,yu74n/zeppelin,jongyoul/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,karuppayya/zeppelin,Nova-Boy/zeppelin,jongyoul/zeppelin,lresende/incubator-zeppelin,radicalbit/incubator-zeppelin,digitalreasoning/incubator-zeppelin,rlugojr/incubator-zeppelin,astroshim/zeppelin,vrlo/zeppelin,sctincman/zeppelin,suvam97/zeppelin,raysteam/zeppelin,optimizely/incubator-zeppelin,Leemoonsoo/zeppelin,anthonycorbacho/incubator-zeppelin,Leemoonsoo/zeppelin,granturing/incubator-zeppelin,Solution-Global/zeppelin,IceKhan13/zeppelin,brigade/incubator-zeppelin,YuanGunGun/zeppelin,astroshim/incubator-zeppelin,yorek/zeppelin,wary/zeppelin,tzolov/incubator-zeppelin,rerngvit/incubator-zeppelin,yu74n/zeppelin,1ambda/zeppelin,datalayer/zeppelin,lresende/incubator-zeppelin,vipul1409/zeppelin,tillrohrmann/incubator-zeppelin,granturing/incubator-zeppelin,ankurmitujjain/incubator-zeppelin,benoyantony/zeppelin,Solution-Global/zeppelin,tinkoff-dwh/zeppelin,mfelgamal/zeppelin,astroshim/incubator-zeppelin,zetaris/zeppelin,nikste/incubator-zeppelin,prabhjyotsingh/zeppelin,jongyoul/incubator-zeppelin,optimizely/incubator-zeppelin,brigade/incubator-zeppelin,soralee/zeppelin,SarunasG/zeppelin-oidc,volumeint/zeppelin,joroKr21/incubator-zeppelin,VipinRathor/zeppelin,ankurmitujjain/incubator-zeppelin,rconline/zeppelin,sagarkulkarni3592/incubator-zeppelin,AlexanderShoshin/zeppelin,Solution-Global/zeppelin,minahlee/zeppelin,SachinJanani/zeppelin,hammertank/zeppelin,zetaris/zeppelin,lobamba/zeppelin,prabhjyotsingh/zeppelin,sohaibiftikhar/zeppelin,samuel-pt/incubator-zeppelin,astroshim/zeppelin,Solution-Global/zeppelin,benoyantony/zeppelin,joroKr21/incubator-zeppelin,datalayer/zeppelin,raysteam/zeppelin,karuppayya/zeppelin,cjmatta/incubator-zeppelin,AlexanderShoshin/zeppelin,yorek/zeppelin,r-kamath/incubator-zeppelin,sohaibiftikhar/zeppelin,sagarkulkarni3592/incubator-zeppelin,chilang/zeppelin,suvam97/zeppelin,mfelgamal/zeppelin,tinkoff-dwh/zeppelin,tillrohrmann/incubator-zeppelin,lresende/incubator-zeppelin,soralee/zeppelin,pellmont/zeppelin,astroshim/zeppelin,ankurmitujjain/incubator-zeppelin,VipinRathor/zeppelin,karuppayya/zeppelin,doanduyhai/incubator-zeppelin,pellmont/zeppelin,samuel-pt/incubator-zeppelin,Altiscale/incubator-zeppelin,tillrohrmann/incubator-zeppelin,rconline/zeppelin,yu74n/zeppelin,SarunasG/zeppelin-oidc,mfelgamal/zeppelin,onkarshedge/incubator-zeppelin,pellmont/zeppelin,zjffdu/zeppelin,r-kamath/incubator-zeppelin,minahlee/zeppelin,suvam97/zeppelin,openthings/zeppelin,Leemoonsoo/incubator-zeppelin,karuppayya/zeppelin,sravan-s/zeppelin,sravan-s/zeppelin,jlagarden/zeppelin,jongyoul/zeppelin,minahlee/incubator-zeppelin,Madhuka/incubator-zeppelin,IceKhan13/zeppelin,cfries/zeppelin,lresende/incubator-zeppelin,zjffdu/zeppelin,cquptEthan/incubator-zeppelin,yu74n/zeppelin,wary/zeppelin,AlexanderShoshin/zeppelin,hammertank/zeppelin,datalayer/zeppelin-datalayer,Solution-Global/zeppelin,digitalreasoning/incubator-zeppelin,suvam97/zeppelin,astroshim/zeppelin,minahlee/incubator-zeppelin,ravicodder/incubator-zeppelin,prasadwagle/incubator-zeppelin,cjmatta/incubator-zeppelin,jongyoul/zeppelin,jongyoul/incubator-zeppelin,r-kamath/zeppelin,sergeymazin/zeppelin,onkarshedge/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,sagarkulkarni3592/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,Nova-Boy/zeppelin,minahlee/zeppelin,r-kamath/zeppelin,mwkang/zeppelin,hkropp/incubator-zeppelin,r-kamath/incubator-zeppelin,digitalreasoning/incubator-zeppelin,cfries/zeppelin,tillrohrmann/incubator-zeppelin,apache/zeppelin,chilang/zeppelin,AlexanderShoshin/zeppelin,r-kamath/incubator-zeppelin,granturing/incubator-zeppelin,SarunasG/zeppelin-oidc,apache/zeppelin,datalayer/zeppelin-datalayer,herval/zeppelin,optimizely/incubator-zeppelin,r-kamath/zeppelin,r-kamath/incubator-zeppelin,hammertank/zeppelin,lresende/incubator-zeppelin,r-kamath/zeppelin,brigade/incubator-zeppelin,IceKhan13/zeppelin,ravicodder/incubator-zeppelin,joroKr21/incubator-zeppelin,sohaibiftikhar/zeppelin,wary/zeppelin,herval/zeppelin,jongyoul/zeppelin,brigade/incubator-zeppelin,Leemoonsoo/zeppelin,digitalreasoning/incubator-zeppelin,wary/zeppelin,Altiscale/incubator-zeppelin,raysteam/zeppelin,vrlo/zeppelin,1ambda/zeppelin,mwpenny/zeppelin-esri,herval/zeppelin,sravan-s/zeppelin,pellmont/zeppelin,prabhjyotsingh/zeppelin,jongyoul/zeppelin,sergeymazin/zeppelin,datalayer/zeppelin,rconline/zeppelin,fogbeam/zeppelin_mirror,cjmatta/incubator-zeppelin,radicalbit/incubator-zeppelin,mfelgamal/zeppelin,zjffdu/zeppelin,sctincman/zeppelin,nikste/incubator-zeppelin,granturing/incubator-zeppelin,onkarshedge/incubator-zeppelin,vrlo/zeppelin,vrlo/zeppelin,pellmont/zeppelin,volumeint/zeppelin,jongyoul/zeppelin,prasadwagle/incubator-zeppelin,radicalbit/incubator-zeppelin,cquptEthan/incubator-zeppelin,joroKr21/incubator-zeppelin,Altiscale/incubator-zeppelin,lresende/incubator-zeppelin,pravin-dsilva/zeppelin,sagarkulkarni3592/incubator-zeppelin,wary/zeppelin,apache/incubator-zeppelin,mfelgamal/zeppelin,rlugojr/incubator-zeppelin,spacewalkman/incubator-zeppelin,openthings/zeppelin,IceKhan13/zeppelin,spacewalkman/incubator-zeppelin,karuppayya/zeppelin,r-kamath/zeppelin,radicalbit/incubator-zeppelin,yorek/zeppelin,rlugojr/incubator-zeppelin,openthings/zeppelin,fogbeam/zeppelin_mirror,SarunasG/zeppelin-oidc,cquptEthan/incubator-zeppelin,ravicodder/incubator-zeppelin,YuanGunGun/zeppelin,volumeint/zeppelin,anthonycorbacho/incubator-zeppelin,vipul1409/zeppelin,optimizely/incubator-zeppelin,tzolov/incubator-zeppelin,rconline/zeppelin,r-kamath/incubator-zeppelin,apache/incubator-zeppelin,apache/incubator-zeppelin,joroKr21/incubator-zeppelin,Leemoonsoo/incubator-zeppelin,sctincman/zeppelin,SachinJanani/zeppelin,astroshim/incubator-zeppelin,nikste/incubator-zeppelin,rlugojr/incubator-zeppelin,jongyoul/incubator-zeppelin,hkropp/incubator-zeppelin,pravin-dsilva/zeppelin,anthonycorbacho/incubator-zeppelin,nikste/incubator-zeppelin,astroshim/incubator-zeppelin,vgmartinez/incubator-zeppelin,Leemoonsoo/zeppelin,minahlee/zeppelin,AlexanderShoshin/zeppelin,datalayer/zeppelin,Madhuka/incubator-zeppelin,tzolov/incubator-zeppelin,r-kamath/incubator-zeppelin,prasadwagle/incubator-zeppelin,tinkoff-dwh/zeppelin,hkropp/incubator-zeppelin,minahlee/zeppelin,ankurmitujjain/incubator-zeppelin,cfries/zeppelin,jlagarden/zeppelin,jongyoul/incubator-zeppelin,doanduyhai/incubator-zeppelin,suvam97/zeppelin,karuppayya/zeppelin,suvam97/zeppelin,digitalreasoning/incubator-zeppelin,sravan-s/zeppelin,VipinRathor/zeppelin,Nova-Boy/zeppelin,Solution-Global/zeppelin,cquptEthan/incubator-zeppelin,optimizely/incubator-zeppelin,mwkang/zeppelin,lobamba/zeppelin,namanmishra91/zeppelin,herval/zeppelin,volumeint/zeppelin,prasadwagle/incubator-zeppelin,namanmishra91/zeppelin,Solution-Global/zeppelin,openthings/zeppelin,sctincman/zeppelin,VipinRathor/zeppelin,sergeymazin/zeppelin,Nova-Boy/zeppelin,SarunasG/zeppelin-oidc,nikste/incubator-zeppelin,fogbeam/zeppelin_mirror,namanmishra91/zeppelin,pravin-dsilva/zeppelin,IceKhan13/zeppelin,raysteam/zeppelin,mwpenny/zeppelin-esri,vgmartinez/incubator-zeppelin,apache/incubator-zeppelin,chilang/zeppelin,zetaris/zeppelin,datalayer/zeppelin,SarunasG/zeppelin-oidc,ankurmitujjain/incubator-zeppelin,volumeint/zeppelin,astroshim/zeppelin,cfries/zeppelin,mwpenny/zeppelin-esri,vipul1409/zeppelin,Madhuka/incubator-zeppelin,benoyantony/zeppelin,Leemoonsoo/incubator-zeppelin,fogbeam/zeppelin_mirror,herval/zeppelin,openthings/zeppelin,pellmont/zeppelin,tinkoff-dwh/zeppelin,namanmishra91/zeppelin,brigade/incubator-zeppelin,ankurmitujjain/incubator-zeppelin,Altiscale/incubator-zeppelin,tzolov/incubator-zeppelin,AlexanderShoshin/zeppelin,ankurmitujjain/incubator-zeppelin,mwkang/zeppelin,VipinRathor/zeppelin,sctincman/zeppelin,raysteam/zeppelin,chilang/zeppelin,minahlee/incubator-zeppelin,vrlo/zeppelin,sagarkulkarni3592/incubator-zeppelin,Madhuka/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,benoyantony/zeppelin,openthings/zeppelin,rerngvit/incubator-zeppelin,suvam97/zeppelin,Leemoonsoo/incubator-zeppelin,fogbeam/zeppelin_mirror,jlagarden/zeppelin,onkarshedge/incubator-zeppelin,tinkoff-dwh/zeppelin,granturing/incubator-zeppelin,Madhuka/incubator-zeppelin,vrlo/zeppelin,doanduyhai/incubator-zeppelin,hkropp/incubator-zeppelin,sravan-s/zeppelin,soralee/zeppelin,sctincman/zeppelin,sohaibiftikhar/zeppelin,yorek/zeppelin,chilang/zeppelin,fogbeam/zeppelin_mirror,r-kamath/zeppelin,minahlee/zeppelin,chilang/zeppelin,apache/zeppelin,jlagarden/zeppelin,YuanGunGun/zeppelin,mfelgamal/zeppelin,YuanGunGun/zeppelin,spacewalkman/incubator-zeppelin,minahlee/zeppelin,zetaris/zeppelin,prabhjyotsingh/incubator-zeppelin,rconline/zeppelin,VipinRathor/zeppelin,onkarshedge/incubator-zeppelin,1ambda/zeppelin,sergeymazin/zeppelin,spacewalkman/incubator-zeppelin,sravan-s/zeppelin,mwpenny/zeppelin-esri,SachinJanani/zeppelin,rerngvit/incubator-zeppelin,vgmartinez/incubator-zeppelin,YuanGunGun/zeppelin,mwpenny/zeppelin-esri,raysteam/zeppelin,openthings/zeppelin,lresende/incubator-zeppelin,yorek/zeppelin,raysteam/zeppelin,tzolov/incubator-zeppelin,samuel-pt/incubator-zeppelin,zetaris/zeppelin,astroshim/incubator-zeppelin,rconline/zeppelin,zjffdu/zeppelin,volumeint/zeppelin,apache/zeppelin,yorek/zeppelin,jlagarden/zeppelin,ravicodder/incubator-zeppelin,soralee/zeppelin,SachinJanani/zeppelin,tinkoff-dwh/zeppelin,cjmatta/incubator-zeppelin,prasadwagle/incubator-zeppelin,sagarkulkarni3592/incubator-zeppelin,mwkang/zeppelin,vipul1409/zeppelin,optimizely/incubator-zeppelin,lobamba/zeppelin,joroKr21/incubator-zeppelin,cjmatta/incubator-zeppelin,pravin-dsilva/zeppelin,1ambda/zeppelin,Leemoonsoo/zeppelin,Leemoonsoo/zeppelin,brigade/incubator-zeppelin,hammertank/zeppelin,cfries/zeppelin,ravicodder/incubator-zeppelin,mwkang/zeppelin,tillrohrmann/incubator-zeppelin,VipinRathor/zeppelin