Revisit the search screen

[jgonggrijp]

This is a container issue for future development on the search results screen. More specific issues should be created later for each of the following parts:

• free-text query input field with submit button
• filtering facets
• list of the actual search results (issue already created in List of search results #29)
• view containing the actions that can be performed on a selection of search results

Filtering options may include:

• what to retrieve: sources, ontology class instances and/or comments
• how to match:
  • for sources: by full text and/or by metadata
  • for ontology instances:
    • by labels (see getLabel(model) frontend utility function #23 )
    • by other attributes (predicates)
      • for advanced search, perhaps specify by which attributes exactly
    • (advanced) by labels from related items
  • for comments: by full text and/or by author
• ways to limit matches (filtering proper):
  • sources: author, date, collection
  • ontology instances: category, creator, creation date, sources in which the instance has been annotated
    • (advanced) values of specific predicates
  • comments: author, date, source in which an annotation was made

[jgonggrijp]

The search results screen (or panel, rather) is actually quite fine as it is for the time being, so updating the title to reflect that it is mostly the pre-result search screen that still needs to be revisited.

[jgonggrijp]

Superseded by #133, #430 and #455, among others.