Initial work on VIK-62
End of week snapshot
Resolved some reporting issues
Swapped File and Size columns in Hashset Hits report
Fixed bug in code to create tag folders local files for file tags report
Changed several filename attributes of TestConfiguration to be constant global variables
Changed documentation to google python standards.
Added methods to TestData to produce paths for gold or output directories.
Added additional helper methods to TestData to eliminate overuse of make_path
Replaced usage of make_path with attributes and methods in TestData
Extended tag display and filtering to keyword and hash set hits and prohibited making local copies of unalloc/virt files for reports
Added UTF-8 encoding meta tag to HTML report
Created DiffResults class to store TskDBDiff results in TestData.
Merge pull request #233 from jawallace/master

Regression Script Refactoring
Cleaned up and refactored TestResultsDiffer to redesign specification.
Merge pull request #232 from rcordovano/master

Tag-Related Enhancements to Artifact Tabular Report Pages
Reorganized regression.py and Emailer.py. Moved util functions to a new file, regression_utils.py
Merge https://github.com/sleuthkit/autopsy
Merge branch 'master', remote-tracking branch 'origin'
Moved error reporting to a central class