refactor of ApiExceptions
refactor of ApiExceptions

Review URL: http://rietku.appspot.com/34001
rhijul/jaikuengine,ridhoillyasa/jaikuengine,kraymond70/jaikuengine,adam-pawluczuk/jaikuengine,Git-Host/jaikuengine,ekkleesia3/jaikuengine,adam-pawluczuk/jaikuengine,SaturninoMateus/jaikuengine,justingrayston/jaikuengine,ekkleesia3/jaikuengine,CarolinaSGomes/jaikuengine,SaturninoMateus/jaikuengine,rhijul/jaikuengine,seckyn/jaikuengine,patrickrolanddg/jaikuengine,KinKir/jaikuengine,justingrayston/jaikuengine,rhijul/jaikuengine,niceQWER007/jaikuengine,niceQWER007/jaikuengine,ridhoillyasa/jaikuengine,SaturninoMateus/jaikuengine,codegooglecom/jaikuengine,KinKir/jaikuengine,rhijul/jaikuengine,hj91/jaikuengine,Git-Host/jaikuengine,hj91/jaikuengine,codegooglecom/jaikuengine,codegooglecom/jaikuengine,ridhoillyasa/jaikuengine,justingrayston/jaikuengine,niceQWER007/jaikuengine,justingrayston/jaikuengine,kraymond70/jaikuengine,Git-Host/jaikuengine,ekkleesia3/jaikuengine,hj91/jaikuengine,CarolinaSGomes/jaikuengine,CarolinaSGomes/jaikuengine,adam-pawluczuk/jaikuengine,adam-pawluczuk/jaikuengine,seckyn/jaikuengine,ridhoillyasa/jaikuengine,dharamgollapudi/jaikuengine,KinKir/jaikuengine,kraymond70/jaikuengine,Git-Host/jaikuengine,ekkleesia3/jaikuengine,KinKir/jaikuengine,niceQWER007/jaikuengine,seckyn/jaikuengine,SaturninoMateus/jaikuengine,rhijul/jaikuengine,kraymond70/jaikuengine,codegooglecom/jaikuengine,niceQWER007/jaikuengine,ridhoillyasa/jaikuengine,justingrayston/jaikuengine,hj91/jaikuengine,patrickrolanddg/jaikuengine,adam-pawluczuk/jaikuengine,patrickrolanddg/jaikuengine,codegooglecom/jaikuengine,SaturninoMateus/jaikuengine,dharamgollapudi/jaikuengine,KinKir/jaikuengine,patrickrolanddg/jaikuengine,CarolinaSGomes/jaikuengine,patrickrolanddg/jaikuengine,ekkleesia3/jaikuengine,seckyn/jaikuengine,hj91/jaikuengine,seckyn/jaikuengine,Git-Host/jaikuengine,kraymond70/jaikuengine,dharamgollapudi/jaikuengine,CarolinaSGomes/jaikuengine,dharamgollapudi/jaikuengine,dharamgollapudi/jaikuengine