MODIFIED: menu show options
ADDED: missing strings.
ADDED: database query for checking if any numbers are trusted
Added tutorial for pending key exchanges
Merge branch '1.3.0-dev' of github.com:tinfoilhat/tinfoil-sms into 1.3.0-dev
Added the tutorial for setting shared secrets using new key exchange
Added tutorial for highlighing how to inititate a key exchange
Added enum used in walkthrough
ADDED: walthrough db table
Merge branch '1.3.0-dev' of github.com:tinfoilhat/tinfoil-sms into 1.3.0-dev
ADDED: query methods
Added the first part the walkthrough class

Greatly simplifies the tutorial process and cleans up the code a lot!
Fixed minor bug in creating the tutorial table
Changed ValueHolder to be simpler with less methods

I got tired of typing out all of the methods inside a switch, it
was easier to just share the same enum.
Updated database classes to use WalkthroughStep
Updated Walkthroughstep to have a setAll() method
Completed walkthrough class
MODIFIED: db access
Updated activities to use the new Walkthrough class
Added support to use new walktrhough class to activities