Bumped version to 0.3.9.
Add syncthing preferences to app settings.
Added "restart" notification.
Cancel restart notification on shutdown, minor refactoring.
Moved SettingsActivity and WebGuiActivity to gui folder.
Preferences code cleanup.
Added native main activity with tabs for repos and nodes.
Fix crash on start after improper shutdown (fixes #16).
Change app theme for consistency with web ui.
Disable HTTPS setting in native GUI (ref #19).
Added local node info fragment in navigation drawer.
Change "Waiting for GUI" to "Waiting for API" in repo/node lists.
Fix app icon to open info drawer, code cleanup.
Added more info to repo/node list items.
Added node and repo settings activities.
Removed unused graphics.
Adjust input type for GUI password.
Moved classes into util package.
Refactor "repository" to "repo" in class/variable names.
Added missing documentation.