enable to refresh the tree in load node mode
fix loadNode condition to reload the tree
documentation of option with key 'loadNode'.
added server side implementation of loadNode.
A beginning of doc for TaoModule::getOntologyData.
Reset of treeData.filter and treeData.loadNode attributes.
refresh tree while leaving search
exclusiv toggling search/filter
Merge pull request #72 from oat-sa/tree-load-node

The selection of nodes works now correctly whether or not the node is currently displayed in the tree or not! Thanks Bertrand for your help !