Audit #1 – General Overview when logged in – Adding more headlines

[marcus-herrmann]

Connected to Audit 1, see #4300
1.2 General Overview when logged in, URL: https://ocis-a11y.owncloud.works/#/files/list

Issue

In 1.3.1a, BITV's requires that contents are structured by headlines, if a page is "information-oriented". While I personally consider the phoenix interface functionality-oriented, a tester could disagree.

Remediation

Regardless: Adding visually-hidden headlines above certain sections won't hurt nobody. My ideas:

• <h2 class="visually-hidden">Navigation</h2> above .oc-sidebar-nav ul, and an IDREF to said headline in the <nav>: <nav class="oc-sidebar-nav" aria-labelledby="navHeadline"><h2 lass="visually-hidden" id="navHeadline">Navigation</h2> ...
• Same for the container wrapping all account functionality: <h2 class="visually-hidden">Account management</h2>
• Same for the files table: <h2 class="visually-hidden">Files in this folder</h2>

This means the final headline structure could be:
h1 "New Folder" (actual name of the folder one is in)
h2 "Files in this folder"
h2 "Navigation"
h2 "Account Management"

[pascalwengerter]

Closing this since #5018 is merged and we're waiting for feedback (and will open new tickets with the requested changes from the a11y audit)