installation: Flask-Assets 0.9 and Jinja2 2.7.2
installation: Flask-Assets 0.9 and Jinja2 2.7.2

* Removing webassets from the requirements as its a direct dependency of
  Flask-Assets.

* Upgrading Jinja2 to 2.7.2.

Signed-off-by: Yoan Blanc <7e8c88beed64bd6a341c3085bc82ac100e832f6e@cern.ch>

tiborsimko/invenio,inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio