Centralized the check in functionality to DineOnUserActivity
Made a few changes to the styles and implemented onSaveInstanceState and
OnRestore Instance State.
Fixed Check In button placement.  Moved it to DineOnUserActivity
Updated the library manifest, added Utility function to check network
connection
Test push to remote
Merge pull request #37 from mhotan/master

Test
Merge pull request #35 from blasv/class_skeletons_zach

Made most changes to the skeletons. No fields fully immutable right now
Merge pull request #36 from espeo196/master

onSaveInstanceState & onRestoreInstanceState
Fixed references to Menu in Restaurant