Route the "About" Global Action to a WebView

Yeah, it's the old site, just a demo :)
Replace Type IDs etc with strings based on lookup data in Parse

Pass around mappings with the ParseObjects in them to each fragment, so
that it can fill them in as it sees fit.
Fix a couple of NPEs on data display

Better approach needed!
Fix fragment titles in details view

This needs to contain the name of the project/event, so change the
navigation interface!
Update README and add Demo

Closes #10 - the "user settings" functionality is replaced by a navigation
fragment.