front fixes: "string" as default var type, var name as default var placeholder, handling empty editable class for wysiwyg
fixed call params syntax {call tpl with $a = 'olo', $b = $trolo}
added nesting {with_each} into {call}, allows using with-each to populate default $content param
fx:if / fx:elseif / fx:else atts fix (was broken since elseif/else became "unknown" by default)
Merge branch 'master' of https://github.com/Floxim/floxim