ERA A+V upgrade to Avalon 6.5.0 - step 3a of n: merge upstream code - will not pass travis

[jefferya]

Step 3a of the ERA A+V Avalon update to 6.5.0. Meant to be combined with several other steps to produce a working ERA A+V

This step:

• Merge tag 'v6.5.0' of https://github.com/avalonmediasystem/avalon into UAL modified 'v6.4.3' of https://github.com/ualbertalib/avalon
• Travis failures fixed in step 3b #624

Avalon 6.5 includes IIIF manifest generation, a new editor for structural metadata, and integration with the Timeliner tool for annotation of AV materials, as well as a variety of updates for supporting libraries and components.

ualbertalib commits

• fix merge conflicts between ualberta customizations and upstream 6.5.0 code
• update Travis (upstreams appears to have switch to CircleCI)

v6.5.0 Upstream added features

Structural Metadata Editor: A visual editor for creating and modifying section structure available on an item's Edit page. The new editor features a waveform visualization and interaction much like audio editing software such as Audacity or Adobe Audition.

IIIF Timeliner: Integration with Timeliner, a reimplementation of the Variations Audio Timeliner annotation tool. Create, edit and share Timelines using media from items within Avalon.

IIIF Presentation 3.0 Manifest Generation: IIIF manifests are now generated by Avalon for all items and can be retrieved from an application endpoint.

Updates and Bug Fixes

• Support for Rails 5.2
• Web upload limit on file size has been increased to 2 GB
• Title attribute is encoded properly in HTML embed code (#2930)
• Type-ahead in username input field no longer overrides values of a very short length (#2896)
• Updating collection information no longer removes staff users (#2994)

[jefferya]

Thanks! I'm in the same boat, trusting upstream. I mostly understand the next steps and will annotate changes.

[mbarnett]

Appreciate it! I know this isn't your mess.