Rer.solrpush

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- Add new feature: if "Query debug" flag is enabled in settings, the SOLR query will be shown to managers.
[cekk]
- In example schema.xml files (dev and test), set "searchwords" as **lowercase** type, to be case insensitive.
[cekk]
- Disable facet.limit default value (100) to get all facets.
[cekk]
- Use swallow_duplicates in Keywords vocabulary to avoid duplicated tokens by truncated strings by SimpleTerm init.
[cekk]

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- Do not escape queries in querybuilder because solr_search already manage them.
[cekk]

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- [fix] now sort_on is not ignored on querybuilder customization.
[cekk]
- [fix] remove / from frontend_url when not needed in indexing.
[cekk]

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- Add criteria for search by Subject stored in SOLR.
[cekk]
- Now solr brains also return right content-type icon.
[cekk]

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- Fix release.
[cekk]

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- Handle all possible exceptions on search call.
[cekk]
- Fix encodings (again) for attachement in POST calls.
[cekk]
- Handle multilanguage paths in querybuilder for collections (use navigation root path instead portal path).
[cekk]