add and multiply noises
Apply umbral
Fixed noise functions, need to fix generators
Fixed generators
Grafical for noises
Merge branch 'noise' of github.com:tomymehdi/ati into noises

Conflicts:
	ATI/src/edu/it/itba/utils/ImageUtils.java
Merge branch 'umbral' of github.com:tomymehdi/ati into noises

Conflicts:
	ATI/src/edu/it/itba/utils/ImageUtils.java
Merge pull request #14 from tomymehdi/noises

Noises