Merge pull request #1767 from mahagr/develop

Merge changes from 3.0 branch
Update version to 3.1
Merge pull request #1768 from mahagr/develop

Update version to 3.1
Merge pull request #1769 from mahagr/feature-crypsis

Merge changes from develop branch
remove old classes
Merge pull request #1790 from 810/template-crypsis

remove old classes
Added support for multiple extensions for category images
Merge pull request #1808 from janich/develop

#1807 Added support for multiple extensions for category images
Fix #1777: Untranslated language string - COM_KUNENA_USER_BLOCKED_DONE
Merge branch 'master' of github.com:Kunena/Kunena-Forum
Merge pull request #1815 from mahagr/master

Fix #1777: Untranslated language string - COM_KUNENA_USER_BLOCKED_DONE
Trashmanager: When restore items. Just show 1 message row #1809
Merge pull request #1816 from xillibit/k30_bugs18

#1809 Trashmanager: When restore items. Just show 1 message row
User Manager: Wrong messages if you delete a user #1810
Merge pull request #1814 from xillibit/k30_bugs10

#1810 User Manager: Wrong messages if you delete a user
Merge branch 'master' of github.com:Kunena/Kunena-Forum
Fix attachments from cutting into half, thanks Jelle
Update languages
Kunena 3.0.1 Release
Merge pull request #1822 from mahagr/master

Kunena 3.0.1 Release