bmoeskau
Faster loading during development
Introduced new load mode 'dynamic-extensible'. With this mode, the extensible framework is loaded dynamically (class by class) while the ext/js is loaded from the archive file. Compared to the fully dynamic mode is is much faster.
Furthermore, changed loading of CSS files in debug and dynamic modes. In these modes, CSS files are now loaded individually, not the concatenated file. This is more useful during development.
Thirdly, set Ext.Loader property disableCaching to false for all the examples. For most examples it was false already, for a few not. It is confusing if caching is disabled for some examples and for some not. Furthermore, if caching is disabled, debugging with Firebug becomes really painful because it cannot remember bread points.
This change is 
