Various forum fixes from 13.x - part 1 (sefurls mainly)
[bp/r52683][FIX] forums: Fix view forum title url 
[bp/r52684][FIX] forums: Sefurl for forum list
[bp/r52687][FIX] forums: Sefurl and title url correction for forums admin
[bp/r52688][FIX] forums: Add confirmation texts and don't show new topic form after deleting one 
[bp/r52689][FIX] forums: More sefurls 


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52736 b456876b-0849-0410-b77d-98878d47e9d5