added support default localized mail templates
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/926
minor refactor related to links including :lang argument
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/943
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/933
removed debug outputs
implemented support for https://github.com/globaleaks/GlobaLeaks/issues/949
x_frame_options now accepts confiogurations only for deny and allow-from modes
Improve text for the X-Frame-Options confugration option
updateTranslations
applyied kingu texts suggestions
implemented feature to disable private messages
implemented https://github.com/globaleaks/GlobaLeaks/issues/953
minor fix needed for https://github.com/globaleaks/GlobaLeaks/issues/951
implemented MVP for https://github.com/globaleaks/GlobaLeaks/issues/950
removed backup file
Minor code cleanup and removal of unused modernizr class.
minor correction to build script
decommented a wrongly commented line
addresseed issue https://github.com/globaleaks/GlobaLeaks/issues/960