- code editor changes:
 * file's list and console are now collapsed by default
 * css improvements to minimize size of borders around code editor
 * default code editor size reduced
 * added fontSize setting , with correct 0.1 steps (in settings view) thanks to a minor change in backbone.forms
 * added correct parsing of width/height options in dialogRegion
- renamed Dropbox related elements to follow official guidelines
 * fixed a few minor related issues
 * fixed bad url modification after dropbox redirect
- added correct steps and limits to a number of visualeditor settings (visible in settings -> view, at least in chrome)