[c13y_upgrade] Add kn_IN, thanks to : rudramurthy

git-svn-id: http://piwigo.org/svn/trunk@23991 68402e56-0260-453c-a942-63ccdbb3a9ee
mobile tags page make it "searcheable" 

git-svn-id: http://piwigo.org/svn/trunk@23995 68402e56-0260-453c-a942-63ccdbb3a9ee