replacing 'and' with '&&'
Merge pull request #1900 from komidore64/and_and

replacing 'and' with '&&'
Merge pull request #1882 from parthaa/filters-to-master

Request to merge content-filters branch to master
Made the errata rule use real dates instead of string

Also added date based validations so that the
start date is before the end.
Added code to deal with time zone issues
Added a space as requested in the PR
Fixed a bunch of unit tests
Added tests for the validator