Remove requirement for a minimum image size in the image editor.

props ericlewis, solarissmoke.
fixes #11325.
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git-svn-id: http://core.svn.wordpress.org/trunk@29042 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a `lang` attribute to each language listed on the language selector screen during installation. See #28858, #28577.
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git-svn-id: http://core.svn.wordpress.org/trunk@29043 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: include https://github.com/tinymce/tinymce/commit/85e22b58e9909f327afeed75dce81c41bf8cfd7dthat and quote one more use of "float". This is "reserved as future keyword by older ECMAScript specifications" according to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar and can throw a syntax error. See #28576.
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git-svn-id: http://core.svn.wordpress.org/trunk@29044 1a063a9b-81f0-0310-95a4-ce76da25c4cd