Adding Logout
Fixing facebook login button
Fixing facebook login pref
Fixing facebook logout
Adding settings activity
Merge branch 'master' of github.com:MohamedBassem/CSEN704 into bassem-android

Conflicts:
	mobile/AndroidManifest.xml
	mobile/res/values/strings.xml
	mobile/src/com/example/csen704/FacebookFragment.java
Fixing passing course id
Linking to profile
Linking create answer
Fixing login button visibiltiy
Adding new logo
Merge pull request #8 from MohamedBassem/bassem-android

Bassem android