Fix Metamorph error

Handlebars expressions cannot be enclosed in HTML
comments
Redirect to index when not connected to remoteStorage

All routes that require to be connected to remoteStorage, can be
extended from `Sharesome.ConnectedRoute`. Users that are not connected
yet, will be redirected to the index.
No need to use an extra view to set the active nav element
Merge pull request #3 from galfert/improvements

Some small improvements
Mini refactoring
Add upload-in-progress state
Update jshint config
Add spinner component and use for upload
Introduce nice dialogs
Add sharing function to history
Syntax
Select URL when dialog opens
Update remoteStorage library to 0.8.2-head
Increase remoteStorage timeout to make big uploads work
Ignore case when checking for image extensions
Merge pull request #5 from galfert/improvements

Improvements
Add some nice icons
Remove dotted link borders
Add build
Fix font build