Add tablet's layout for managing deployments, fixes T766

Summary:
  - Add layout for landscape mode.
  - Add layout for portrait mode.
  - Add a drawer indicating a split between list deployment and add deployment form

Test Plan:
  - Build and install app on a tablet device.
  - Launch app.
  - See both list deployments and add deployment form show.

Reviewers: dkobia

Subscribers: rjmackay

Maniphest Tasks: T766

Differential Revision: https://phabricator.ushahidi.com/D347