Conflict resolved in url patterns

Previously , gapps urls accepts the name same as app name in urls in some cases, because of which some app urls gets redirected to custom app context , so for that we needed to create multiple urls for same view. 

Since our common url pattern in __init.py__  is "urls with all names in lower cases", according to that , i made the change in gapps_menubar.html template to accepts the app urls always in lower cases, so that it will not loose the app context. 

I have tested it for all apps, but still If you find any conflict in any of app urls due to this change then let me know.