[REF] Use variables for colors (tiki-wikipages_and_plugins.less)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52864 b456876b-0849-0410-b77d-98878d47e9d5
[MOD] Add icon set information.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52865 b456876b-0849-0410-b77d-98878d47e9d5