Changed sdkMinVersion, implemented getAllPlugin filter to list active or
all
Added action bar with a test menu item to perform updating
Added refresh icons resources and item on the Action bar
Moved refresh data in dashboard activity
Added network-check (AppHelper class) when refreshing data from sources
New plugin property to store data-source URL
External UpdateManager as AsyncTask - First step
Added progress-dialog and update-result-dialog. Removed old assets and
gen folder from repo.
Added progress-bar, dirty source to be cleaned
Update manager completed. Added plugin class for each plugin.