FIXED: ManageContactsActivity

Fixed the expandable list view to properly handle on long click requests for both groups and children.
ADDED: delete menu to AddContact
FIXED: bugs relating to adding new contact
Added a byte-level comparison for verifying the public key signature
FIXED: bugs related to adding new contacts

Founds some bugs relating to adding contacts to have multiple numbers.
MODIFIED: comments
Merge branch 'khalil' of github.com:tinfoilhat/tinfoil-sms into edit_contacts

Conflicts:
	branches/prephase3/src/com/tinfoil/sms/settings/EditNumber.java
Merge branch 'edit_contacts' of github.com:tinfoilhat/tinfoil-sms
MODIFIED: documentation

General modifications to the  documentation and removed some old fixed TODOs.
Merge branch 'master' of github.com:tinfoilhat/tinfoil-sms into khalil

Conflicts:
	branches/prephase3/src/com/tinfoil/sms/settings/EditNumber.java