[MONDRIAN-1912] Added support for FORE_COLOR and BACK_COLOR in Calculated Cell Properties.  Up until now, Mondrian was not aware of these two properties.
Merge branch 'evergreen' of https://github.com/tgf/mondrian into evergreen
Merge pull request #5 from wgorman/evergreen

[MONDRIAN-1912] Added support for FORE_COLOR and BACK_COLOR