admin: hooks: handle overflow of long hook names Some hook names are quite long and are visually truncated in the admin section. Use the same principle as on the System Info: hide overflow and add ellipsis, use a title attribute to let users discover the full name on hover.

# requirements.txt file for use as "pip install -r requirements.txt" as a
# readthedocs compatible alternative to "pip install -e ." which is a working
# alternative to "setup.py develop" which doesn't work with Mercurial 3.7
.