Add full text search textfield

[essepuntato]

Even if the full text search is already possible by means of the SPARQL extensions made available by Blazegraph, it is important to add an appropriate widget in the Website so as to allow users to properly search for resources as happens in common search engines.

[Suggested by Reviewer 3 of our ISWC 2017 paper]

[davidshotton]

From notes on Project Meeting 17th Oct 2017:
Development of query interfaces
* Objective: To be able to interrogate OpenCitations content
Simple human query interface: Single text box – enter author name, fragment of title, or identifier
* Return list of all bibliographic entities matching query
Advanced query interface – permits Boolean operations
* Enter Author 1 Family name First name / initial or ORCID
and/or Author 2 Family name First name / initial or ORCID
and/or Title (contains)
and/or Keywords / phrase
* Response
* Return as many hits as meet the criteria
* For each returned paper, give the user the ability to:
* Copy citation (bibliographic metadata) [With a Choose Format box]
* Or Show incoming and/or outgoing citations (opens graph display)
* Ivan to do this, using indexing already developed