Code cleanup (removed some dead and/or deprecated code); demonstration editor improvements; 'style' filter now support $_ variable inside 'style_value' parameter; temporary fix (try..catch to avoid incomplete execution) on a new IE bug when repeater uses a tree walker to dispatch 'duplicate' message (which itself is deprecated); commit includes a new axel.js built.
Removed deprecated 'string' plugin; Removed jquery-1.5.1 third party; 'xmlrobustloader' not longer included in the default 'axel.js' lib; Removed 'design' folder that was containing mockups that were use to help designing the library but which are not maintained (TODO: commit a fresh pre-built library 'axel.js').
Added a method to activate document commands in demo editor (to be called from AXEL-FORMS demo editor); refreshed axel.js library : all auto-test PASS on recent versions of Firefox, Safari, Chrome, Opera and Internet Explorer (except the test with the 'content' plugin on IE).