Plonemeeting.portal.core

------------------

- Fixed locale issues.
[aduchene]
- Updated LESS theme to add more padding around faceted view.
[aduchene]

----------------

- Fix open annexe files in new tab.
[odelaere]
- Fix Institution icon minimum size when uploading svg.
[odelaere]
- Fix custom CSS colors not updating when an institution was not published.
[aduchene]
- Revamped Intitution views using default plone.dexterity template.
[odelaere].
- Allow using classifier field from json instead of category.
[odelaere]
- Transition events on Institution Folder also apply on its children.
[odelaere]
- Only managers can add folders.
[odelaere]

----------------

- Do not break when importing an annex if annex `filename` is `None`.
[gbastien]
- When calling the `annexes endpoint` to get annexes for an item, call it with
`?publishable=true` so only publishable annexes are serialized and returned by
PloneMeeting which speed things a lot.
We do no more manage the case when `publishable_activated=false`, we consider
that `publishable` is always activated.
- Adapted code to be compatible with version `4.1.x` and `4.2.x`
of `Products.PloneMeeting`.
[gbastien]

------------------

- Hidden faceted and ical actions.
[odelaere]

------------------

- Refactored LESS theme to be more mobile-friendly.
[aduchene]
- Updated iA.Delib API calls using search method
[odelaere]

------------------

- Hide representatives_in_charge on faceted view if it's not used.
[aduchene]
- Fixed ValueError: Circular reference detected on Item/folder_contents view
by adding an indexer on formatted_title Item field.
[aduchene]