Added aria-labelled by to slide out tab application landmark element.
Merge branch 'v3.0'
Corrected value for aria-labelledby for slide out tab.
Merge branch 'v3.0'
Added aria-labelledby to application landmark on share widget.
Resolved merge conflicts.
Added aria-labelledby to application landmark on auto-complete polyfill.
Resolved merge conflicts.
Changed pe. to _pe. and replaced  with _pe.main.
Removed JSHint pe global override from footnotes.js.
Resolved merge conflicts.