Imio-dashboard

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- Added possibility to display number of collection items in the term view.
[cedricmessiant]
- Removed unused method CustomViewFieldsVocabularyAdapter.additionalViewFields.
[gbastien]
- Added params in PrettyLinkColumn. Use it in RelationPrettyLinkColumn and external columns.
[sgeulette]

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- Added RelationPrettyLinkColumn to display with PrettyLink a z3c.relationfield.relation.RelationValue attribute.
[sgeulette]
- Limit padding left and right of the faceted checkbox widget to 0.2em instead of 1em.
[gbastien]
- Added 'combined indexes' functionnality making it possible to combinate faceted filters together to
query a single catalog index.
[gbastien]
- In utils._updateDefaultCollectionFor as we change the faceted criteria annotations, make sure
it is persisted by setting _p_changed = True
[gbastien]

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- The POD template description is now displayed when hovering the POD template title.
[gbastien]

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- Consider portlet is outside faceted when adding a new element.
[sgeulette]
- Use ITopAboveNavManager to display the dashboard POD templates viewlet,
this is due to a change in collective.eeafaceted.z3ctable where viewlet managers
were renamed (was ITopManager before).
[gbastien]

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- Adapted CSS regarding sort triangle entities now that we use larger ones.
[gbastien]

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- Format sort triangle entities.
[sgeulette]
- Define an icon_expr for portal_type DashboardPODTemplate so it is correctly
displayed in the DX types control panel especially.
[gbastien]