search & pagination added to wikipage module

search & pagination added to wikipage module.
modifed in :
/gnowsys-studio/gstudio/views/user.py
/gnowsys-studio/gstudio/templates/metadashboard/wikidashboard.html

new template added:
/gnowsys-studio/gstudio/templates/metadashboard/wikifilter.html