Various Bug Fixes

* Firefox and Chrome downloads work for latest versions
* Added ingest message upon RecentActivity completion summarizing which browser's had history data that was found.
* Artifact Viewer resets correctly
* "Number of Matches" label in DataResultPanel is updated after all nodes have been loaded
* Fixed UI hang when selecting Single Keyword Query Result from under Results when there are a large number of results.
* Seven Zip module will throw an exception from init if it fails to initialize correctly.
* Fixed table header for Keyword Results to "Files with Hits"
* Better error reporting in Recent Activity Module if database queries fail due to an unexpected schema (i.e. an unsupported version of firefox or chrome)