Add flags for LookupTypes for onHover, searchPage and findPivot

[cloudtracer]

All lookupTypes should have flags to enable different features:

• Enabling onHover should allow the lookupType to work in the browser for the on hover functionality.

• Enabling the searchPage will allow the lookupType to be searched in the bulk search page.

• Enabling pivot will use the regex to find related indicators in API responses (which is also controllable via white/black lists in requestLookups).

This functionality will be good to disable more intrusive indicators like FQDNs, URLs, Emails in the on hover, but still allow them to be searched via highlight and right click search.

[cloudtracer]

Pushing with threatpinch 3.0