[TASK] More compatibility fixes for TYPO3 6.2 (#55783)

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/formhandler/trunk@85295 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] Typo in Generator_Csv resulting in wrong default output encoding (fixes #56606)

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/formhandler/trunk@85296 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] PHP warning on a page with formhandler plugin in QuickEdit mode (fixes #58513)

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/formhandler/trunk@85297 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] Wrong language for error-messages when form is submitted via Ajax (fixes #58754)

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/formhandler/trunk@85298 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] Ajax submit disables all Formhandler submit buttons on page (fixes #53522)

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/formhandler/trunk@85299 735d13b6-9817-0410-8766-e36946ffe9aa