Remove add deployment menu. Fixes T800

Summary:
  - Created menu resource for tablet devices using the sw600dp qualifier
  - Set visibilty to false for create account menu item

Test Plan:
 - Build and launch app on a tablet device
 - See `+` icon hidden

Reviewers: dkobia

Subscribers: rjmackay

Maniphest Tasks: T800

Differential Revision: https://phabricator.ushahidi.com/D358