Merge pull request #2 from mjl3475/master

Added options page and ability to open tickets in new window.
Added 'Estimated' indicator to legacy SLA calculations.
Fixed restore_options function not apply setting state to checkbox.
Added default Chrome settings page element theming.
Added live updating for Time to SLA column!
Removed "Save" button for consistency with standard Chrome Settings page behaviour.
Added ticket filtering feature to view tickets by SLA status.
Added visual tidying up of the columns displayed in the ticket list.
Fixed Ticket Type column display when no Subcategory is present.
Updated Date Created/Updated columns to display in relative time.
Minor version jump.
Extend matches in Parature to support both custom views and ticket body.
Hacked solution to removing columns by name, could be done better if we run into performance issues.