EBRAINS theme + Other improvements & Fixes

[appukuttan-shailesh]

Changes the app theme to align with EBRAINS

Other changes

• update navbar for model/test detail page to combine figures & results under a header 'validations'
• fixed faulty results handling for model/test detail page vs multicompare workflow (see convertResultsFormat())
• removes ThreeWaySwitch in place of generic SwitchMultiWay
• contains GUI elements for adding curation and validation filters to config form (commented out at the moment; awaiting development of features)
• fixes bug in edit test for data location
• improves appearance of all tables (model-> results, test-> results, multi-result compare)

[apdavison]

is this ready to merge? or does it need some backend changes to be deployed first? (e.g. curated models)

[appukuttan-shailesh]

This is already functional. Components for upcoming features have been commented out.
I would like to make some more theme-related changes, and hope to do that tomorrow.
Shall update here once ready.

[appukuttan-shailesh]

@apdavison : this is now ready to be merged