Closes bug 972975: refactored template, css and added some js to toggle annotations without affecting document layout
Fix z-index of Panel when annotation icons are present
Made notes visible on hover, and click icon behaviour more consistent
Fix Bug 965501, use flex for moar header awesomeness
Tweaks and add Safari support for flex
Final tweaks to header layout
put the spinner back jack
Add white-space nowrap to bullet proof checkbox label
closes bugs #991990 & #991991 - url hash is consistent with ranges, ctrl toggles single lines properly

Spelling and doc fix
Whoops. Increment format version since espressive changed layout.html in the flexbox patch.
Fix omniglot issue with multiple repositories, rs=ErikRose.