Merge pull request #10 from rajatpatel92/master

Fresh Pull Request
added function to remove empty groups
fixed everytime Default execution
prevented directory doesnot exist popup everytime.
fixed empty group bug
Fixed infinite loop in recursive function
Fixed bug in aroma config, added response to advanced group.
Fixed bug in updater-script, caused while creating Normal Zip
Added dalvik cache selection while after installing apps
Added 'wipe dalvik cache' confirmation after installing apps
Fixed Bug in delete system apk code and aroma config
UI changes in Delete System Apk Group
UI changes in ImportZip