Simpler, less disruptive hover preview delay: let image provider continue
to use its hack where it re-hides the popover as soon as it's shown (until
image loaded); no separate preloading of image; only delay popover based on
simple timeout (not compound of timeout + provider-specified delay).

Also, ignore mousemove when a drag is in progress.
test popover positioning
Merge remote-tracking branch 'origin/master' into pflynn/hover-preview-delay

* origin/master: (105 commits)
  Minor fixes after review
  update HTML file extensions for smarty and twig file extensions
  String in case we want to add a "More" link to get to the extension's home page
  Fix GitHub case
  String requested by adrocknaphobia
  Update 'de' locale
  Reworked the text of getting started
  make sure hex values end on boundary
  implement updated project panel styles
  Fix regressions in the display of literals and keywords in code hints. 1. keywords should be monospace. 2. literals should be dark grey.
  add new identifier colors from Lawrence Hsu.
  Properly force the Extension Manager to retrieve the registry on every dialog open
  Explain whether incompatible extensions require older or newer versions of Brackets. Remove hard-coded app name references in strings.
  Updated by ALF automation.
  Externalize strings from Extension Manager view item template
  define offset in constant
  fix problem where jQuery was not recognized as a builtin
  Increase max image size to 200x200
  fixed padding
  add jquery api to hints
  ...

Conflicts:
	src/extensions/default/HoverPreview/main.js
Merge branch 'master' into rlim/hover-preview-unit-tests

Conflicts:
	src/extensions/default/HoverPreview/main.js
Remove TODO and make 'lastPos' throttling official: in a quick test, it
reduces the number of events handled by 8-10x while moving mouse around.
Export all hover preview functions as private functions to unit tests.
Update test file with some repeating-linear-gradients, repeating-radial-gradients, and some invalid color names.
Update unit tests with the correct cursor positions for all unit tests.
Merge pull request #3477 from eztierney/codereview-cleanup

Cleanup for comments from pull request #3439, switch to tern hinting
Merge branch 'master' into adobe-iwehrman/js-hinter-cruft-removal

Conflicts:
	src/extensions/default/JavaScriptCodeHints/main.js
Merge branch 'master' of https://github.com/adobe/brackets
Merge pull request #3475 from adobe/rlim/hover-preview-unit-tests

Adding hover preview unit tests
Merge remote-tracking branch 'origin/master' into randy/hover-preview-gradients
remove misguided attempt to filter gradients for Chrome 25
fix unit tests for changes in this branch
fix permissions on french translation
Merge pull request #3507 from adobe/jasonsanjose/getting-started-fr

french getting started translation from sprint 23
Merge pull request #3509 from adobe/alf

ALF Automation
Merge pull request #2729 from zeis/openline

Add feature. Open line above/below the current line.
Merge remote-tracking branch 'origin/master' into pflynn/hover-preview-delay

Still need to fix up Hover Preview unit tests to work post-merge.

* origin/master: (22 commits)
  fix permissions on french translation
  Export all hover preview functions as private functions to unit tests. Update test file with some repeating-linear-gradients, repeating-radial-gradients, and some invalid color names. Update unit tests with the correct cursor positions for all unit tests.
  test popover positioning
  Few cleanups for OpenLine's tests
  Remove Italian strings for OpenLine. Add little changes to tests.
  Updated by ALF automation.
  french getting started translation from sprint 23
  Include changes to OpenLinecode and new tests
  cleanup based on codereview comments:
  Adding image files used in unit tests
  Add unit tests for hover preview
  Add special case for last line in inline editor
  Initial test files creation
  Include TomMalbran's suggestions
  Remove cruft from the outdated stats-gathering branch.
  Add few improvements in OpenLine
  Fix OpenLine undo history
  Fix OpenLine problem with inline editors.
  Invert OpenLine shortcuts
  Improve Open Line feature. Add additional unit tests.
  ...

Conflicts:
	src/extensions/default/HoverPreview/main.js
Spanish strings for sprint 24
code review comments