Fix typo error on docs
Typo fixes

I noticed two small typos: "shorthard" -> "shorthand", remove lone "g"
showdown package is moved to markdown package.

[stubailo: some fixes to maintain alphabetical order and update ToC]
Add ability to define custom link for ToC, and add link for spiderable
Check for empty mutators in validated updates
Search-as-you-type for docs.meteor.com

Conflicts:
	docs/client/data.js
Make escape key work in Safari for search
Make docs remember whether you were last at full or basic
Don't activate search for keys with modifiers
Change to keydown event so that the first character always appears
Make back button work when switching from basic to full via dropdown
Use CSS instead of an image to draw the menu icon in the mobile doc

[stubailo: make the target much bigger than the icon, make icon smaller]
Bump version of highlight.js to get closer to IE8 compat
Update History and banners
Update History for all the other releases too
update release file for 1.0.1
add link to www in banner
update History to note backports
Some simple refactoring of search
Stop tracking state in the DOM