captcha does now work for feedback comments
minor improvements to feedback template
alix5-feature-feedback: form does now show title of related article or download;
removed some unnecessary stuff from feedback template
template page for feedback stuff added to admin CP
fixed error in getFeedbackTitle() function
changing feedback status via admin CP will now generate an automated note
new: possibility to list feedback issues with certain status only
sort issues in descending order by id (a.k.a. "newest first")
Merge branch alix5 into alix5-feature-feedback