feature 2916 Replace raphael with symbol fonts (experimental 2 icons in batch manager actions)

git-svn-id: http://piwigo.org/svn/trunk@23055 68402e56-0260-453c-a942-63ccdbb3a9ee
merge r23059 from branch 2.5 to trunk

bug 2917 fixed: invalidate user cache each time pwg.images.delete is called,
to avoid blocking errors on gallery side if deleted photo is set as album
thumbnail.



git-svn-id: http://piwigo.org/svn/trunk@23060 68402e56-0260-453c-a942-63ccdbb3a9ee
bug:2890
testing a new layout: feedbacks welcomed on the bug ticket
ToDo: not hardcoded, rounded corners, remove the 2 actions

git-svn-id: http://piwigo.org/svn/trunk@23062 68402e56-0260-453c-a942-63ccdbb3a9ee