Merge pull request #2126 from mahagr/feature-hmvc

Merge changes from K3.0.4
#1529 J3.2+ : keep the tab selected by user when do an action on button
#2124 Crypsis : Sort user list - all options remain inactive
Buttons actions in layout list doesn't have correct style
Merge pull request #2128 from xillibit/k30_bugs12

#1529 J3.2+ : keep the tab selected by user when do an action on button
Merge pull request #2131 from xillibit/k31_bugs2

Buttons actions in layout list doesn't have correct style
Merge pull request #2129 from xillibit/k31_bugs3

#2124 Crypsis : Sort user list - all options remain inactive
#2105 RSS : only topics are generated (Part 2)
Merge pull request #2132 from xillibit/k30_bugs11

#2105 RSS : only topics are generated (Part 2)
Merge pull request #2134 from mahagr/feature-hmvc

Fix #2090, #2009, #2007, #1945, #536, #1090
Merge branches 'feature-hmvc' and 'master' of github.com:Kunena/Kunena-Forum into feature-hmvc
#2130 J! 3.2.0 + K 3.0.3: Kunena Template Manager does not filter users
Fix #2138: JomSocial rule file is not copied to the site
Merge branch 'master' of github.com:Kunena/Kunena-Forum
Revert #2088: It breaks layout in a few tested templates (second try)
#2133 Crypsis: Update html
#2139 J3.1+ Forum Tools - Prune Categories: the day field is too small
#2144 J 3.1+ Trash Manager - Restore Items : Error Undefined index
Add a config option to choose if the stats link can be showed for guests
#2137 Search: Cannot use variable ?q=xxx in nginx