Added API for customizable TimeSource
XML documentation for TimeSource classes
Removed CurrentTimeGetter and replaced all references with TimeSource.Current.Time
Force the time to local time in order to make last write time comparison work as expected
Test coverage for TimeSource classes
Faked file headers to make automated tests happy
Synced TimeSource changes to all project files
XML configuration for time source
Renamed time source classes to better convey their purpose, also added TimeSourceAttribute to all projects
Updated names of test cases
Test XML configuration of time source
Merge pull request #227 from robertvazan/master

Pluggable time sources