Implement Image Sorting & Classification methods

[ShaharMS]

Below is a todo list, hopefully all will be completed for the 2.1 update:

• K-Mean Clustering
  • Cluster similar color values as well as numerical values
  • Allow multi-dimensional (point) clustering
  • Implement a cluster amount guessing mechanism
• Color-Based Image Categorization
  • Categorizing by color groups instead of single colors
• Image Similarity Checker
  • Low quality image filterer for similar images

(Items may get added/removed)

[ShaharMS]

tasks 1, 1.1, 1.2: b3d9d96

[ShaharMS]

Rest are planned for further releases