* Done image blur processing after the image was loaded in order to have the ability to cache the processed and initial image
* Updated method to set a placeholder without blurring
* Added methods for loading the blurry and the crisp image together and separately
Merge branch 'master' of github.com:AFNetworking/AFNetworking into logic_for_blurry_image_caching
* Separated properly methods for downloading, processing and caching images
* Included themeColor in the image processing block
* Added clamp filter to avoid edgy borders in the gaussian blur
* Fixed conflict for merged code
* Merged from JLUgia master