add more search filters

[ricardogsilva]

We need to be able to select relevant things as fast as possible, which means that items (projects, missions, records) need more search filters. Therefore let's add filters for:

General item listing pages:

• projects

  • show only internal projects (i.e. those that are not published)
  • filter by temporal extent
  • filter by spatial extent

• missions

  • show only internal missions
  • filter missions by parent project
  • filter by temporal extent
  • filter by spatial extent

• records

  • show only internal records
  • filter records by dataset category
  • filter records by workflow stage
  • filter records by filesystem path fragment
  • filter records by parent survey mission
  • filter records by grandparent project
  • filter records by asset media type (blocked by add a media-type property to asset discovery configurations #170 and add media_type property to record assets #172)
  • filter by temporal extent
  • filter by spatial extent

Hierarchical items detail pages:

• projects

  • show only internal missions
  • filter by temporal extent
  • filter by spatial extent

• missions

  • show only internal records
  • filter records by dataset category
  • filter records by workflow stage
  • filter records by asset media type (blocked by add a media-type property to asset discovery configurations #170 and add media_type property to record assets #172)
  • filter records by filesystem path fragment on the mission details page
  • filter by temporal extent
  • filter by spatial extent