BibEdit: ticket templates for new RT ticket

* Adds plugin templates that are used when creating new tickets
  from within BibEdit.

Reviewed-by: Javier Martin Montull <javier.martin.montull@cern.ch>
BibHarvest: enchancements to PoS filter

* The output files now have the input file path as a prefix.

* InvenioConnector now connects to CFG_SITE_URL

* The fulltext are now stored in a separated folder for each run.

Signed-off by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>
BibHarvest: use search engine API in PoS filter

* Changes the method used in the PoS filter to query the database
  to use the search engine API instead of InvenioConnector.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
BibTasklets: use bs4 instead of lxml

* Changes the way the fulltext XML is parsed from lxml.etree
  to bs4.BeautifulSoup to avoid errors with HTML5 entities that
  etree currently do not support.

* Improves submission feedback when running in devmode.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>