Sephiroth74/development

Here the things added:
* fadeTime for PicassoDrawable in the requestcreator instead of just fade/nofade
* added resize( width, height, onlyIfBigger ). The bitmap will be resized only if bigger than the targetWidth targetHeight, this to prevent up scaling when non necessary.
* delay in requestcreator for delaying loaders
* added a custom scheme which will be used with "Generator" to generate a bitmap (from scratch) instead of downloading a bitmap.