<mark> tag not allowed

[Looimaster]

I just noticed that the <mark> tag is not allowed for administrators in WPMU 3.6. All other tags like: b, i, em, strong, sup, sub, samp, var, kbd, s, small, q, ins, dfn, del, cite, abbr, a seem to be allowed. I imported an XML using [Tools > Import] and it was stripped.

[kraftbj]

<dfn> is not allowed in posts currently either. Both are semantic/HTML5 valid tags that are for formatting only. Including patch to allow for <mark> and <dfn> to be allowed.

[kraftbj]

Allowing mark and dfn in allowedposttags

[kraftbj]

New patch to include samp to resolve old #1937 as well.

[nacin]

In 26973:

Add dfn, mark, and samp to kses.

props kraftbj.
fixes #24950.