Disco video

[mstriemer]

I didn't like the other one so I started from scratch and used it as a guide. I think it's looking a bit cleaner.

Fixes mozilla/addons#9582.
Supersedes #430.

[mstriemer]

I updated the sizing on the video to 512x288 since that's half of the video's 1024x576. The border radius wasn't working with the other dimensions since there'd be whitespace on the sides so you couldn't see it.

[coveralls]

Coverage remained the same at 100.0% when pulling c514e48 on mstriemer:oediv-314 into 9ac1063 on mozilla:master.

[muffinresearch]

I think for the videos you could use the file-loader directly since these should never be inlined. The url-loader hands-off to the file-loader if the size is over the limit param.

[mstriemer]

If we had a small video wouldn't we want it inlined though? I feel like the benefits would be the same as for images. I doubt we'll have a video that small but none the less.

[muffinresearch]

Lgtm, we'll need to double check this when we have rtl, but it looks great.

r+wc

[mstriemer]

@pwalm does the screencast look good?

[pwalm]

@mstriemer Holy hell, does it ever. That looks awesome!

[coveralls]

Coverage remained the same at 100.0% when pulling 33fbff1 on mstriemer:oediv-314 into 9ac1063 on mozilla:master.

[coveralls]

Coverage remained the same at 100.0% when pulling f281089 on mstriemer:oediv-314 into 9ac1063 on mozilla:master.