Fix TOC display

Improve diplay of ignored section
Add a compilation indicator

Display a spin when a compilation launched by a user is active (at the
right of "compile" in the top of the paper page).
Add a progress bar for the PDF rendering

Display a progress bar which indicates the progression of the PDF parse.
Improve SyncTeX support

Improve PDF -> code source, now the correct file associate to the PDF
zone is found.
Udapte AngularJS to v1.2.22
Update ACE Editor to v1.1.6
Improve LaTeX autocompletion

Improve autocompletion list.
Search label created by the user and add them into the auto completion list