The LMS should serve favicon.ico also when a theme is enabled.
Annotation Tools: Removed background-color from image annotations

- Also fixed edit bug when annotation is not created first
- Also fixed indentation issues
XBlocks can disable navigation chrome.

There is an option to:
* Enable/disable accordion navigation
* Enable/disable/repoint tab navigation

This allows for full-screen XBlocks (e.g. a code IDE, or large video
player). It is also the first pass at allowing top-level XBlocks. It's
also now possible to make a chromeless XBlock, point a tab to it, and
make it point back to that tab.

Next steps down that path would be:
* Fix up how tabs are handled. The current version is a hack.
* Create appropriate XBlocks for courseware, tabbed navigation,
  etc. to reach feature parity
* Invert/rejigger the XML format.
Removed suppress_top_level_nav, as per Cale
Explicit disable_accordion
Review from Cale
Review from Cale
Annotations Tools: Commented OSDA code and added clarification to catch changes
Add possibility to run bok_choy tests in local env.
Remove FAQ link in header when disabled
Moving these tools to i18n-tools repo
remove tests, and bump version
Moved test_generate from i18n-tools
Merge pull request #4170 from lduarte1991/lduarte-harvardx-pr6

Annotation Tools: Removed background-color from image annotations
Merge pull request #4174 from edx/pmitros/chromeless-xblocks

XBlocks can disable navigation chrome.

This allows for full-screen XBlocks (such as code IDEs), as well as allowing us to somewhat hackishly build top-level XBlocks. This is the first step on the path to non-hackish top-level XBlocks.
Change reference to installed i18n command.
Update to the i18n-tools with the underscore processing
Merge pull request #3982 from edx/dcs/move-i18ntools

Moved i18n tools to i18n-tools repo
Merge pull request #4184 from IONISx/tusbar/add-mktg-check-dropdown

Remove FAQ link in header when disabled
Lower logging level in grading condition from exception to info

addresses part of LMS-2907