installation: install without Invenio as requirement

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
installation: update Travis CI script

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
harvestingkit: initial non-Invenio dependancy

* Tries to remove all hard dependencies to Invenio in harvestingkit.

* NOTE Invenio is still recommended to use alongside harvestingkit,
  but it is not strictly required.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
merge me
elsevier_package: fix exception if no sa_affiliation

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

* Improves the XML parsing to use the more standard lxml library
  instead of minidom.

* Updates select tests to reflect the new changes and adds new ones.

* Fixes an issue where missing knowledgebase during journal name
  lookup would generate an exception.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
installation: update requirements with version

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
global: force UTF-8 encoding

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