[a11y] 1.1.1 Non-text content

[tschiebel]

https://infinite.owncloud.com/s/KcGPhbRgJfHYHuw

BIT inklusiv BITV-Softwaretest - BIT inklusiv (bit-inklusiv.de)

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• The image with the logo should contain an alternative text to ensure
  ensure barrier-free accessibility.

• The arrows "<" and ">" should be hidden by screen readers. This ensures #11635
  ensures that NVDA or other screen readers do not display the arrows as
  "Size/Smaller than" or similar text output.
  

Space

• Images that convey the visual status of the space are not recognized by screen readers
  and are not displayed. If the Space is not available, an error message
  an error message is normally displayed. However, this error message
  was not displayed in the test either.
  

Server activity

• It appears that the image shown in the screenshot is a decorative element,
  but it is recognized by screen readers as an image without alternative text.
  

Add Space

• The images in the table column "Image" are not provided with alternative texts.