[devtools] qunit: only start firefox once per test
The separate profile initialization step doesn't seem necessary anymore.
This was due to the system-wide installation of the "Sage" Firefox
extensions which breaks -url on a fresh profile. Removing this obnoxious
extension allows us to launch Firefox in a standard way.
Related to #5533333.
CSS Coding Standards
--------------------
(Draft, to be continued)
:Naming: camelCase
Indentation rules
~~~~~~~~~~~~~~~~~
- 2 espaces avant les propriétés
- pas d'espace avant les ":", un espace après
- 1 seul espace entre les différentes valeurs pour une même propriété
Documentation
~~~~~~~~~~~~~
Please keep rules semantically linked grouped together, with a comment about
what they are for.
Recommendation
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- Try to use existing classes rather than introduce new ones
- Keep things as simple as possible while in the framework
- Think about later customization by application
- Avoid introducing a new CSS file for a few lines of CSS, at least while the
framework doesn't include packing functionalities