- more refinement and experimentation with project managment views/ functionality
 * added correct retrieval and display of project's files list (now used by projectBrowseView2 to display the selected project's list of files)
 * added better visuals for the above
 * tried yet again to have a cleaner projectBrowserView (v3) : still not good: tried to use collection binders (see src/app/modules/core/utils/DataBoundViews.coffee)
 * added main menu entry for project browser (no implementation)

- finally fixed the code editor's resize issues:
 * passing better params to jqueryUi layout
 * and via hacks (javascript resize event callback setting sizes)

- improved filesTreeView
 * better visuals through use of standard bootstrap css
 * removed some custom css : should be avoided when possible until I switch to "LESS"
 * added backbone.pickysitter to enable single view selection (and therefore auto deselect of all other views)
 * minor bugfix and slight cosmetic improvement to the file renaming system (error class gets removed after a timeout, in case of already existing file name)

- deleted some old unused files