[fp/r51137][ENH] maps: Allow forms, searchlayers and features to set popup size on dialog type popups
[FIX] Missed merge from 12.x branch so this commit actually fixes some regressions, thanks Geoff

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52143 b456876b-0849-0410-b77d-98878d47e9d5