Clean up wp-admin-rtl.dev.css

[recKz]

"In wp-admin-rtl.dev.css, there are comments that suggest the line numbers of corresponding rules in wp-admin.dev.css . However, these comment lines are outdated.

The task is to update these line numbers, and re-order the rules as necessary based on the corresponding line numbers in wp-admin.dev.css.

Sections such as Media library, TinyMcE, ltr, no italic at the bottom of the files don't need updating."

​http://www.google-melange.com/gci/task/show/google/gci2010/wordpress/t129369847109

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I've completed this as part of my Code In task and have attached the patch to this ticket. There were a couple of elements that I couldn't find in wp-admin.dev.css and put these in their own category at the top of the file.

[garyc40]

Patch looks good. I gave a run through with RTL and everything looks OK.

However, still needs review from an RTL expert.

[yoavf]

A rewrite of wp-admin-rtl,css has already been done in r17941 as part of the update for #17324 (admin style refresh)- so this can be closed.
This would have probably got in if the styles wouldn't have been updated for 3.2, so thanks a lot (alot even) for the contribution!