Fixed PHP deprecated assigning of return value.

(E_DEPRECATED) php warning: Assigning the return value of new by reference is deprecated
Fixed PHP deprecated assigning of return value #2

PHP Strict error "Assigning the return value of new by reference is deprecated".
OT_Settings
Merge branch 'patch-2' of https://github.com/DeanMarkTaylor/option-tree into DeanMarkTaylor-patch-2
Merge branch 'patch-1' of https://github.com/DeanMarkTaylor/option-tree into DeanMarkTaylor-patch-1
Merge branch 'DeanMarkTaylor-patch-1' into wip
remove added line
update changelog
fixed Media Upload not working on some servers
Merge branch 'master' of github.com:valendesigns/option-tree into wip
merge tag update
stupid copy and paste
Merge branch 'master' of github.com:valendesigns/option-tree into wip
Patch to fix PHP notice regression after Theme Check update
update changelog
added some WPML support
I think it may be WPML compatible but needs more testing!
update comment text
add unregister to list item & slider
better filtering of strings
remove esc_attr on font-family check