merge r30106 from trunk to branch 2.7

bug 3162: because string(5) "35.10" == string(4) "35.1", we have to use === instead (or !==)



git-svn-id: http://piwigo.org/svn/branches/2.7@30107 68402e56-0260-453c-a942-63ccdbb3a9ee
Merged revision(s) 30110 from trunk:
datepicker display by default -80:+20 for year select (previous -10:+10)

git-svn-id: http://piwigo.org/svn/branches/2.7@30111 68402e56-0260-453c-a942-63ccdbb3a9ee
merge r30310 from trunk to branch 2.7

bug 3165 fixed: template variable ACTIVATE_COMMENTS had been accidentally removed with Piwigo 2.6


git-svn-id: http://piwigo.org/svn/branches/2.7@30311 68402e56-0260-453c-a942-63ccdbb3a9ee