updated jquery,
new group and blogs layout,
css fixing,
added a switch button in groups search form,
added explicit link in confirmation email,
bugfixing
seaarch partecipants fix
merged mion changes and i18n
better tag page and proposals list
removed database file
Fixed search button
added l parameter to call for i18n
improved search groups
improved il18n
fixed typos in en.yml
Merge branch 'version_2_7' of https://github.com/coorasse/Airesis.git into version_2_7

Conflicts:
	app/controllers/proposals_controller.rb
	app/helpers/notification_helper.rb
	app/views/groups/index.html.erb
	config/database.yml
	config/locales/en.yml
	config/locales/it.yml
small fixes to il18n
completed group search
fix errors on groups
Continue improvement of il18n
* Translated history of the proposal
* Fixed "l" parameter on JavaScript functions for check boxes
* translated tags page
Merge branch 'version_2_7' of https://github.com/coorasse/Airesis.git into version_2_7