Started to change the logic for the queries with fq
Merge branch 'master' into current branch
Improvements and changes.

- The logic of q, fq has changed: what the user sees is not what the app
sends to SOLR
  - all the negative filters now go in the q
  - any single facet can be configured to use q or fq via the config
file
  - any facet can be configured to use a specific function to append its
value to q or fq
- the default sorting is RELEVANCE
Merge branch 'master'
Merge branch 'master'
Small change in the config file
Merge branch 'master'
The title field is a list in SOLR now (since a while): fixed in the
templates
Fixed bug with facet visualization