added fork markers for silvia

+ a few grammatical tweaks
added note to placeholder definition

explained use of placeholder can reduce accessibility and usability for
people
Revert "added note to placeholder definition"

This reverts commit 25ae7f89ac35e3b7900dcb82a8139e113543ae57.
minor edit
Update boilerplate/header-w3c-html-core

fixed link to multipage (note added full URL) probably needs to be chnaged, but at least no 404
removed non conforming use of title
[ISSUE-1][ISSUE-2][Bug 21103] Filter out some <a ping> content that's slipped through the merge process.
[Bug 21131] Re-add #figcaption-as-alt-condition.
modified placeholder note after feedback

http://lists.w3.org/Archives/Public/public-html/2013Feb/0232.html and
http://lists.w3.org/Archives/Public/public-html/2013Feb/0231.html also
replaced placeholder text duplicated elsewhere in spec.
tweaked placeholder note text
Update boilerplate/middle-w3c-copyright

correct date - 2013
grammatical corrections -thanks mallory!
modified mapping of header and footer

refer to https://www.w3.org/Bugs/Public/show_bug.cgi?id=21164
added missed word 'role'
Adding boilerplate for webvtt - playing around with the spec.
[e] (0) Clarify text
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@7726 340c8d12-0b0e-0410-8428-c7bf67bfef74
(cherry picked from commit a5bd3abab15ec0ef9045d22e09e31eb5e347a67d)

clarify allow-same-origin on iframe
[giow] (0) Sort algorithm, first draft.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=20524
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@7727 340c8d12-0b0e-0410-8428-c7bf67bfef74
(cherry picked from commit 8d155e6541693601b097218317487ed969c8fd63)

Improve table sorting algorithm.
better bug link
Bitbucket url for anolis shouldn't be ssh://

ssh://bitbucket.org/ms2ger/anolis requires to have a ssh public key with bitbucket. Not every users have that.
Merge pull request #11 from mounirlamouri/patch-1

Bitbucket url for anolis shouldn't be ssh://