matt and steve | made view fragments for missions
Merge pull request #1 from spwntr/master

Merge fragments for missions by matt and steve
Added library for rest calls and draft api client.
add mission model
Merge branch 'feature-Network' of https://github.com/spwntr/roadmap-space-app-client into feature-Network
Steve and Matt | fixed backstack issue for buttons from homefragment.
Merge pull request #2 from spwntr/master

Steve and Matt | merged feature-Network and master
Changed menu options names. Implemented parcelable for Mission. Renamed api client interface methods.