* Replace deprecated methods.
* Remove no longer needed function fnmatch().
* Remove superfluous newlines.
* Remove unused and redundant local variables and globals.
* Deglobalization.
* Update documentation.
* Fix incorrect return values or add FIXMEs when in doubt.
* Escape output in a few places where needed.
* Remove unneeded MEDIAWIKI constant checks.
* Fix various JSHint/JSLint issues.
Patch Set 11: Merged https://gerrit.wikimedia.org/r/24701 into
this one per Siebrand's request
Change-Id: I02ba4ce31b6aca5b7324114093f8ece143abc295
Most of the rest cannot get a context since it originates from hooks with no context sources. Instead of just getting the main context we might as well wait for a proper solution.