installation: location of demo_table_jui.css

* Fixes location of demo_table_jui.css by explicitly referencing last
  git tag that contained the file.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Merge pull request #1954 from kaplun/fix-install-demo_table_jui

installation: location of demo_table_jui.css
base: default module in PACKAGES

* Adds 'invenio.base' to PACKAGES in order to simplify application
  factory.

* NOTE If you have modified PACKAGES in your overlay configuration you
  will need to append 'invenio.base'.

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
apikeys: fix for early import outside app context

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
assets: registry proxy usage fix

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
BibDocFile: undefined variable fix

* Fixes internal server error when directories are missing on the
  filesystem.

* Applies fix from 'pu' to 'master'. The fix was overwritten by the recent
  large master to next merge (eefac3e73d8dd5b7c5ac1a47cb298431f4a8662f).

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Merge branch 'master' into next

* master:
  BibDocFile: undefined variable fix
  installation: location of demo_table_jui.css