Data/provenance browser

Add ideas/suggestions/goals here.

• We need a better mechanism that allows users to search/query for workflows and provenance, for example search by project, parameter names and values
• One way to view this is to allow the creation of mappings between the vistrails/projects into different structures---like "smart folders", e.g., /projectN/vt1/wf3/exec23/O1....
• Support editing and synchronization in both ways (if edit smart folder, should update vt)
• Should be able to script the use of the browser, e.g., to test a new version of a workflow against a saved test suite
• Scientists like a directory structure and can go browse there like they browse files with finder/explorer
• Keep mappings from our datatypes to file structures
• Need an exportable archive (to send with a paper, allow browsing outside of VisTrails)