Add skeleton for arethusa.comments
Move arethusaLoaded var to state
Add comments to sg conf
Start to do the CommentsRetriever
First steps in comments service
Read in real chunk identifier in comments
Show that it works in comments template
Pass the correct comment obj in CommentsRetriever
Minor refactor in navigator

In navigator.updateState we need to update the navigators id before
we replace the state, as is this triggers an event - listeners might
already want to see an updated state.
Start to use real data in CommentsRetriever
Comments need to be in an array

There could be several comments to a single token.
Minor fix in morph3 template
Setup for comments directives
Remove old comment templates
Add comment styling
Fix scope issues in CommentsRetriever
Better comments padding
Add idHandler.sourceIdMap()
Clean up comments retriever
Add id mapping to comments service