Merge pull request #13 from moodlehq/FIX-MOODLE-433

Side menu is now a plugin.
Merge branch 'menu_changes' of https://github.com/moodlehq/moodlemobile into release_candidate
Router needed to be loaded at the end of loadLayout so that plugins didn't hit infinite loops
Merge remote-tracking branch 'upstream/release_candidate' into feature_theme-from-release-candidate