bibdocfile: pdfjs previewer fix

* Fixes issues with files being loaded over http instead of https.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
bibexport: app context fix

* Fixes Flask application context issue.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
docs: jasmine ext inclusion

* Includes Jasmine extension in documentation.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
knowledge: mapping limit support

* Adds support for limiting the number of entries returned.

* Fixes backward incompatible change in order of keyword arguments
  introduced in a6115ff.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
installation: WTForms, dateutil and redis update

* Removes version constraints on WTForms, python-dateutil and redis
  packages.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>