Update therubyracer gem to get past some libv8 issues
Vendor lrbalt's fork of cache_digests
lock versions in Gemfile for release
Remove obsolete scripts from Rails <3.0 and RSpec
Move install and upgrade instructions into the main Tracks release
Convert formatting from Octopress to standard Textile
Fix links which used Octopress tags
Update URL for ZIP download
Remove trailing whitespaces and fix some fr entries
Replace 'Echéance' by 'Échéance'

Capital letters should be accentuated when needed even if the usage of
poor quality digital typography has disolved its usage. The usage of non
accentuated capital letters can be considered as orthographic mistake.
Add GPLv2 license text
Restore original copyright naming
Merge pull request #140 from TracksApp/move-manual

Move install and upgrade instructions into the main Tracks release
Fix an omission during vendoring of cache_digests

A local git exclusion prevented Gemfile.lock from being added.
Bring in recent entries from the 2.1_branch changelog

Also restore header formatting to before it was pasted from the README
Improve i18n french (Tolk workflow)

Miscellaneous improvements from orthographic or translation mistakes to
typographic conventions (restrained to existing keys). Add some missing
strings.
Remove Mongrel gem
Update Rails to 3.2.12 (security fix)
invalidate cache for both context when you drag-and-drop a todo from
one context to another
fix timing issues on failing scenarios. Fix deprecated jquery functions and update jqueryui

Signed-off-by: Reinier Balt <lrbalt@gmail.com>