Added some base styles for help text
Include help components
Disable the edit FavouritesEditButtonView if no Favourites
Tidy styling on Favourites and expose context button styling
Abstracted the LocalStorageCollection from Favourites

Share the code for catching any localStorage related errors throughout
the app
Collection for HelpMessages on our app object
Render a help message on the today view if the user hasn't seen it
Merge pull request #49 from ox-it/help-messages

Help messages
Merge pull request #50 from ox-it/favourites-polish

Favourites polish