sprint 27 - updated czech language
Improved fix for #3889 (Middle click should close files):
- Don't go through normal selection-click handling codepath first: detect
middle click in the same place we filter out close-button clicks. No longer
need a separate click listener as a result.
- Use constants for event.which
- Remove long-commented-out rename code
- Move misplaced comment ("might never have been opened") to its rightful
home
Implmentation of beforeAll/afterAll
Updated by ALF automation.
Merge branch 'master' into alf
Renames the functions to beforeFirst/afterLast. Updates some comments and the use of this when calling the functions.
Merge branch 'master' into alf
Merge pull request #4584 from adobe/alf

ALF Automation
Merge remote-tracking branch 'origin/pr/4398' into jasonsanjose/kvarel-4398

Conflicts:
	src/extensions/default/JSLint/thirdparty/jslint
	src/nls/cs/strings.js
Merge pull request #4614 from adobe/jasonsanjose/kvarel-4398

sprint 27 - updated czech language (merge master)
Merge pull request #4581 from TomMalbran/tom/before-after-all

Implementation of beforeAll/afterAll
fix failures in webplatform docs tests
Merge pull request #4616 from adobe/jasonsanjose/webplatformdocs-unittests

fix failures in webplatform docs tests
Merge pull request #4576 from adobe/pflynn/middle-close

Improvements to middle-click closing files