update assessment filtering

[caseyhans]

Changes

Updates assessment lists to use the new inline filter forms, and to show more data in the table.

FilterSet updates:

• BaseFilterset now allows for fields to specify an initial value; this is NOT recommended for the vast majority of filter options, but it is useful for order by, since a default/initial order is unavoidable. See django-filter docs for more info
• 'Select' widget fields in the inline form now show help text when hovered over (if available)
  

Public assessment list

Before

After

• Inline filter form with increased filter capacity (name, author, year, assessment values, project type, report id, dtxsid, casrn)
• CASRN shown in table, when available
• Assessment objectives rendered as safe, allowing for formatting

Portal assessment list

Before

After

• Same changes as public assessment list
• Combined three separate lists based on assessment role into one list
• Users can also filter by assessment role on this page (manager, team member, reviewer)

[shapiromatron]

LGTM - @casey1173 I ended up making a number of additional minor revisions, could you please give it one more pass through prior to merging to make sure things look ok?