pc_align: Clarify what the transform is about
pc_align: More clarification on the transform
point2dem: Fix for very large images
OrthoRasterizer: Conserve memory for large cloud chunks
doc: pc_align: Minor touch ups
pc_align: support custom csv format on input and output

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Core: Altered InterestPointMatching affine check to allow flipped images
Core: Added some documentation to several classes
Tools: Testing new small blob filter
Tools: Cleaned up new BlobMaskView class
Replaced old ErodeView implementation with new blob masking class