installation: location of flot

* Updates location from where to download flot to local hosting
  on invenio-software.org site.

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  installation: location of flot
BibAuthority: separate Authorities collection

* Separates Authorities collection from Bibliograpic collections
  in the demo site by putting the Authorities to the virtual rhs
  collection tree.  Amends tests accordingly.  (closes #1605)

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>