Support accesskey like Wikipedia

[tim-janik]

The $tabs$ generated by gitit are unfortunately not editable via tempates/ so I'm filing this as a bug.
Please add the accesskey attribute to the default HTML generated by gitit, along the lines Wikipedia does it:

<a id="loginlink" class="login" href="/_login"    accesskey="o">
<li><a href="..."  accesskey="c"  >view</a>
<li><a href="..."  accesskey="e" >edit</a></li>
<li><a href="..."  accesskey="h" >history</a></li>
<li><a href="..."  accesskey="t"  >discuss</a></li>
<input name="patterns" id="patterns" type="text"                 accesskey="f" >
<input name="logMsg" id="logMsg" value="" type="text"                 accesskey="b" >
<input name="update" id="update" value="Save" type="submit"     accesskey="s"  >
<input class="editButton" id="previewButton" value="Preview" type="button" accesskey="p"  >

[rybak]

For reference, what English Wikipedia supports is described at https://en.wikipedia.org/wiki/Wikipedia:Keyboard_shortcuts

[rybak]

I haven't written Haskell in quite some time, so bare with me.

As an example, "edit" links on English Wikipedia use key e as accesskey. E.g. the main page has following HTML:

<a href="/w/index.php?title=Main_Page&amp;action=edit" title="This page is protected.
You can view its source [Alt+Shift+e]" accesskey="e"><span>View source</span></a>

In Gitit, the "edit" links have _edit in their URL, and it seems to be generated by these lines of code of Gitit:

gitit/src/Network/Gitit/Layout.hs

Lines 146 to 153 in eed3263

	tabli EditTab << anchor !
	[href $ base' ++ "/_edit" ++ urlForPage page ++
	case rev of
	Just r -> "?revision=" ++ r ++ "&" ++
	urlEncodeVars [("logMsg", "Revert to " ++ r)]
	Nothing -> ""] << if isNothing rev
	then "edit"
	else "revert"

It seems that it uses the function anchor from Haskell module Text.XHtml.Strict of xhtml package. Same lines of code also use the href function. Unfortunately, documentation in xhtml package is a bit scarce, but it seems that it would be possible to add support of accesskey attribute via function strAttr.