Add max-width and ellipsis to project names in the tenant switch.

Closes-Bug: 1337900
Change-Id: Ia847eb87869e4b4ffbe34f618849bdb064a1c74d
Add IMAGE related settings to documentation

Added description of two parameters IMAGE_CUSTOM_PROPERTY_TITLES and
HORIZON_IMAGES_ALLOW_UPLOAD to doc/source/topics/settings.rst
documentation file.

Closes-Bug: 1336071

Change-Id: I6e6780053503086f10c21cacbce981286c42a65b
Merge "Add IMAGE related settings to documentation"
Merge "Add max-width and ellipsis to project names in the tenant switch."