Twenty Fourteen: more Genericons fixes, merging exact files with latest Genericons 3.0 files for consistency and future ease of merging. Props obenland and georgestephanis, fixes #25085.

git-svn-id: https://develop.svn.wordpress.org/trunk@25506 602fd350-edb4-49c9-b593-d223f7449a82
`unlink()` the generated image in `Tests_Image_Intermediate_Size::test_make_intermediate_size_successful()` at the end of the test to avoid cruff in `svn diff`s.



git-svn-id: https://develop.svn.wordpress.org/trunk@25507 602fd350-edb4-49c9-b593-d223f7449a82