Fixed issue #6502: Unable to import multi-lang surveys (.txt)

Dev: groups are now exported with a unique identifier.
Dev: older multi-lang .txt files should also be properly
Dev: imported. Here we make up an identifier during
Dev: import.
Merge pull request #134 from mfaber/multilangTSV205

Fixed issue #6502: Unable to import multi-lang surveys (.txt)
Dev Improved error messages from remote control to allow for better
analysis of the error.
Merge remote-tracking branch 'origin/2.05' into usergroups205
Fixed issue #08198: Change admin of survey is not protected from CRSF
Dev: just use $.post
Dev: add some control
Dev: some security ? in template copy
Dev: Use jquery in sendPost (not $.post, because need real submit)
Fixed issue #8226: Error when using mask mm/yy in date question

Dev: error appeared while entering a date in a date time question
Dev: with settings "dropdown boxes yes" and a date mask without
Dev: day (eg. YY/MM)
Dev: Replace the .attr('checked') method with a .prop() method
Dev: .attr('checked') is not supported in jQuery 1.6+
Dev: fix $aEncodings is not set
Dev Fixed issue where a token could not be resumed.
Fixed issue: #08036: unable to import 2.0 lss survey
Dev: fix googleAnalytics and allowjumps
Dev: return warnings for other
Merge remote-tracking branch 'origin/2.05' into usergroups205