change success message text to state that it might take up to an hour before an extension appears

(has been one *day* before)


git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ter/trunk@79296 735d13b6-9817-0410-8766-e36946ffe9aa
[TASK] point to the news article on the TYPO4 version requirement in the error message


git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ter/trunk@79309 735d13b6-9817-0410-8766-e36946ffe9aa