Upgrade: Font Awesome 4.2.0

[talbs]

This work updates our Font Awesome vendor files to the most recent version. This update required an expansive change in semantics and icon name references. A few notes:

• On the Studio side, I've added a class of .icon to any font awesome reference for our own additional styling/tweaking.
• Some icon names have changed or had to be replaced by similar icons
• Reference templates, tests, as well as views have been updated

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• Studio Sandbox: http://studio.talbs.m.sandbox.edx.org/
• LMS Sandbox: http://talbs.m.sandbox.edx.org/

[talbs]

@clrux, here's a revised PR with one commit that contains all of our combined work. Mind taking a look and making sure you're cool with things I've done?

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@frrrances, mind manually reviewing the UI for Studio as well as the FED code?
@marcotuts, mind reviewing the forums UI manually to make sure we're not causing any issues?

[talbs]

Getting you folks a sandbox - should be up shortly.

[talbs]

UPDATE: Sandbox has been created.

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@clrux, I also ran into a few rendering issues on the course outline (with my abstraction to having any edX-specific styling refer to a .icon class rather than font awesome specific ones). They mostly involve some inheritance issues with transitions/animations. Would you have tim e to proof and fix those issues?

[marcotuts]

@talbs - testing on your sandbox I found a few small notes for the discussion forum.

1.) the new post button icon seems to have an alignment issue I don't see on production (though I'm not sure if it is something another branch in between our current release and this branch may have introduced.) (reference: https://www.dropbox.com/s/s8do1y6yj0zuq27/Screenshot%202014-11-24%2018.05.20.png?dl=0)
2.) rebuilding devstack now to test the discussion home grid alignment locally, although if you happen to have that enabled already that is the one area that might not have been proofed yet. https://www.dropbox.com/s/nfvdgmm3ibknvbe/Screenshot%202014-11-24%2018.10.07.png?dl=0
3.) on hover of the post type icons there seems to be a color change from blue to edx-merlot which isn't currently on production (reference while hovering on the first post:
)

I couldn't find anything else while testing the forums. Thanks for doing all of this work! Excited to be working on the latest font-awesome set.

[frrrances]

Reviewed Studio and found the following:

Grading plus button is missing the icon - looks like an old cleanup may have affected this, but we can just go ahead and fix now:

Icons are missing from the Course Announcements page (which may not be a bad thing):

Alignment of edit icon on outline items on Outline page (which you guys already know):

Contact Us button in the sock:

That's all I got for this, though I found a bunch of other bugs/fixes I want to make now!

[talbs]

@clrux, let's address the rest of the feedback on this branch/PR - https://github.com/edx/edx-platform/pull/6055. We'll merge that one in rather than this one which has some funky git commit stuff going on. Closing this with that in mind.