fix(select): fix double label issue using placeholder in md-input-container
fix(select): fix double label issue using placeholder in md-input-container

references #2793

quietshu/material,asonni/material,hesling/material,ardas/material,ilovett/material,SamDLT/material,vertazzar/material,alfirin/material,miladhamzelou/material,victorivens05/material,vanslly/material,weiwei695/material,iksose/material,brian-lewis/material,FrankMeyer/material,richtmat/material,p5150j/material,pwistbac/material,aanjna/material,acoreyj/material,amithub/Angular-Material-Web-Design,kwypchlo/material,lukascivil/material,clshortfuse/material,JonFerrera/material,quietshu/material,Splaktar/material,theZimmee/angular-material,rolandoldengarm/material,mlabieniec/material,paulflo150/material,vanslly/material,dlochrie/material,Zagorakiss/material-1,shyndman/material,masterpowers/material,dalong123/material,lukascivil/material,brian-lewis/material,brian-lewis/material,Benew/material,jadjoubran/material,wisavalite/material,programmersujeet/material,david-gang/material,onumossn/material,oostmeijer/material,Benew/material,aanjna/material,bendroid/material,mobinni/material,marekmicek/material,mprentic-harris/material,armst0910/material,Mexiswow/material,brunoqc/material,bjfletcher/material,paulflo150/material,pan-long/material,SagarNaliyapara/material,nconrad/material,imjoeco/material,cdriscol/material,victorivens05/material,wanmifam/material,wisavalite/material,hannahhoward/material,shyndman/material,jelbourn/material,Antariano/material,gkalpak/material,bjfletcher/material,jianwang195823/material,noamshemesh/material,valery-barysok/material,CarmenPopoviciu/material,onumossn/material,Sravyaksr/material,ebulay/material,n1vlac/material,david-gang/material,noamshemesh/material,b-cuts/material,2947721120/angular-material,dkemper01/material,kennethcachia/material,eloytoro/material,pijey/material,un33k/material,davidecavaliere/material,colinskow/material,Teremok/material,ardas/material,ServiceManagementGroup/material,ErinCoughlan/material,isaaclyman/material,Azzurrio/material,SagarNaliyapara/material,weiwei695/material,pwistbac/material,miladhamzelou/material,SagarNaliyapara/material,isaaclyman/material,Bryanschauerte/material,theZimmee/angular-material,JsonChiu/material,Bhavinshah5111/material,tarnas14/material,Drooids/material,david-gang/material,flowersinthesand/material,kwypchlo/material,Zagorakiss/material-1,pwistbac/material,ByJC/material,mobinni/material,graingert/material,abhijitsinha89/material,un33k/material,loic/material,FrankMeyer/material,Patrik-Lundqvist/material,BurovAndrii/material,dmitriz/material,DevVersion/material,pan-long/material,welkinhealth/material,justingrayston/material,Patrik-Lundqvist/material,listenlee/material,RebootJeff/material,imjoeco/material,dlochrie/material,arush/material,robteix/material,weebygames/material,gabimanea/material,psaul3/material,franzsilva/material,n1vlac/material,1012/material,hitesh97/material,ErinCoughlan/material,gkalpak/material,RebootJeff/material,jadjoubran/material,57-Wolve/material,franzsilva/material,ilovezy/material,pijey/material,ryancampbell/material,Teremok/material,vurt/material,java02014/material-1,valery-barysok/material,gabimanea/material,ebulay/material,miguelcobain/material,imjoeco/material,b-cuts/material,xiexingen/material,arush/material,CarmenPopoviciu/material,Verarxar/material,wanmifam/material,DevVersion/material,willgum/material_03,alfirin/material,hodeyp/material,weiwei695/material,HipsterZipster/material,m0g/material,angular/material,taranjeetsapra/material,onumossn/material,weebygames/material,udhayam/material,xale/material,b-cuts/material,Frank3K/material,pwistbac/material,keshavos/material,brunoqc/material,bjfletcher/material,hiteshsuthar/material,jelbourn/material,philipooo/material,robertmesserle/material,taranjeetsapra/material,wanmifam/material,nkoterba/material,rolandoldengarm/material,jianwang195823/material,veraksar/material,Todd-Werelius/material,mprentic-harris/material,BurovAndrii/material,zhhb/material,hiddestokvis/material,Frank3K/material,barryvdh/material,justingrayston/material,davidecavaliere/material,kennethcachia/material,hiddestokvis/material,brian-lewis/material,brunoqc/material,arlowhite/material,ServiceManagementGroup/material,asonni/material,mohislm/material,hiteshsuthar/material,bjfletcher/material,miguelcobain/material,Antariano/material,quietshu/material,wisavalite/material,aikalima/material,JackieWei/material,dmitriz/material,miaotmac/material,Splaktar/material,andreialecu/material,amithub/Angular-Material-Web-Design,NickBolles/material,ByJC/material,hodeyp/material,gmoothart/material,robteix/material,davidecavaliere/material,iksose/material,crisbeto/material,Patrik-Lundqvist/material,mattiLeBlanc/material,oostmeijer/material,jmcabandara/material,DevVersion/material,marpontes/material,clshortfuse/material,epelc/material,justingrayston/material,isaaclyman/material,j3ski/material,Bhavinshah5111/material,miguelcobain/material,Sravyaksr/material,IRlyDontKnow/material,sscovil/material,JonFerrera/material,johanvo18/material,aikalima/material,hitesh97/material,izeau/material,loic/material,JayQuerido/material,marpo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