allow multi-line checkbox for preferences with long titles
inspired from http://stackoverflow.com/questions/2408708/show-extra-info-for-preference-screens-when-checkboxpreference-summary-field-is
using longtitle checkboxes
Merge pull request #395 from dontcallmedom/master

allow multi-line checkbox for preferences with long titles
[tx-robot] updated from transifex
Merge branch 'develop' into regular_authentication_in_saml_server
OC-3390: Shows message about 'not support authentication' under server address