Updated gui error message to current flag
Changed video descriptor algorithm names
Added the DenseHOG abbreviation
Reverting mistake in old commit
Enable vs warning for unused parameters at w3

For consistency with other supported compilers, enable a warning about
unused parameters at warning level 3 in visual studio.

By default this warning is at level 4, but using level 4 isn't really
feasible since a ton of warnings are generated for Qt header files.
fixed msvc warning
ROITransform now looks for X,Y,Width,Height fields
abort on parse error
added support for AlgorithmID=7
apply the ROI _after_ decoding the image
Change false accepts to a percentage, moved legends to bottom
Merge branch 'master' of https://github.com/biometrics/openbr
fixed compile error
Drop additional parameter to store, instead introduce Transform::simplify

Instead of having a parameter to force serialization of loadStores,
introduce a recursive method for simplifiying transform trees. Transforms
which are only useful during load/training can now remove themselves from
the tree via Transform * simplify, returning e.g. their child transform
instead of themselves when possible.

This avoids the issue of LoadStore transforms refusing to serialize
themselves onto an input stream during multi-process enrollment, since
they are just removed from the tree.
Merge branch 'master' of https://github.com/biometrics/openbr into serialization_update