buildrequest collapse
 - TODO:
   - update master/docs/manual/customization.rst
break the brdict loop as soon as possible
 - do not use brdict term
 - use worst_status
 - don't ignore buildset with claimed br
make use of qtile theme for the documentation
prevent "Go" button from overflowing
make parameter names standout in DL
docs cosmetics
Makefile: Allow to use another pip than the system one

When installing buildbot in a not-activated virtualenv, it comes handy to define PIP before calling make frontend.
Merge pull request #1265 from sa2ajj/new-docs-theme

New docs theme
Add possibility to restart single slave
Do not use --quiet options since it always return EXIT_SUCCESS
change step state_strings to state_string: DB model
change step state_strings to state_string: DB API
change step state_strings to state_string: data API + consumers
remove outdated TODO
change build state_strings to state_string: DB model
change build state_strings to state_string: DB API
change build state_strings to state_string: Data API + consumers
add a --no-js option to validate.sh
switch $slow to $quick and negate