[WIP] 30 fragments and navigation drawer
- Implemented a navigation drawer in NavDrawerActivity, which is using fragments and a Toolbar instead of an Action bar
- Seperated actions and navigations as dictated by Google in the design guidelines. The signout button is an action in the Toolbar and navigations are in the drawer.
- Replaced the DashboardActivity with a DashboardFragment
- Made a dynamic, re-usable, loading screen with a progress wheel and a text refence
Closes #30 (closed) CLoses #181 (closed)