Merge branch 'hotfix/0.7.5'
added an AclHelper in the edit user view
changed ->AclLink->_allow('controllers/Admin') to  variable
replace ->programDetails with an empty array
removed issset()
set  in the participant view
fix load main model as it should be in cake
fix shortcode Controller setup classes
add missing model
removed print_r
clean code
Merge branch 'hotfix/0.7.6' of https://github.com/texttochange/vusion-frontend into hotfix/0.7.6

Conflicts:
	app/Controller/ProgramUnattachedMessagesController.php
Merge branch 'hotfix/0.7.6'
Merge branch 'release/0.7.7'

Conflicts:
	app/Controller/ShortCodesController.php
	app/View/Users/edit.ctp
fix only comput stat for displayed programs + catch exception in case of timeout during stat computation
Merge branch 'hotfix/0.7.8' into develop