removed addContact method

transferred it to the main activity
add third parameter "context" to Contact constructor
include functionality needed to be used for data insertion in the database. call encrypt method before submitting the message.

also make an object of SQLiteDatabase
Merge branch 'master' of https://github.com/thirty9th/StealthMe

Conflicts:
	bin/classes/com/example/stealthme/MessagingActivity.class