database more methods are added.
Newsfeed UI connected with database code
modified .gitignore
delete the fucking .class files
Merge branch 'database' of https://github.com/lushashaka/Carnnecting into database

Conflicts:
	.gitignore
	bin/Carnnecting.apk
	bin/resources.ap_
	gen/com/cmu/carnnecting/R.java
	res/values/strings.xml
	src/com/carnnecting/home/Home.java
Added nagivation to action bar; skeleton of category menu
Added expanding list for category menu with mock data
added Database access for category menu
Merge branch 'category' into lushaz

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml
	src/com/carnnecting/account/Login.java
	src/com/carnnecting/home/Home.java