Fix default param for router model
Update locked vis-link upon route change

Also re-render pagination on every collection change. The view is
simple so is fast enough
Fix typo in view
Revert default param for router to page
Show non-locked shortcut

Also:
- refactored and hopefully made the content view a little clearer with
the variable renames
- refactored router model, simpler logic to generate the url
Remove console.log from datasets list
Don't display page X of N if there is only 1 page