Applied Twitter bootstrap 2.0 and dumped old styling.

First steps; still needs lot of customizations.
More tweaks.
alert helper, i18n improvements
first restyling steps for unpublished concept view
improved notifications
Revert "improved notifications"

This reverts commit f06701a5716c9524c542029b3d304e09fe3d545f.
Tweaked button alignment.
i18n cleanup
replaced notice alert with success.
Revert "replaced notice alert with success."

This reverts commit edde74f5d956a20f077a2ae60ba64217266b2b6d.
Revert "Revert "replaced notice alert with success.""

This reverts commit d7818fc0eb3b98ebc75e507bba28054efbdc3a45.
improved flash handling
to_review gets info flash
page headers
translations for base classes
restyled concept edit form, change notes still not working
v3.5.6
added version to about page
tweaks
Revert "tweaks"

This reverts commit 3642bd8b466f81a417d1635256f1149079eebad6.