Set the font-weight for links to 'normal', to prevent ugly bold links.
Update toolbar.css.twig
Add media-query for printing: Do not print the toolbar.
minor #9347 [WebProfilerBundle] Small bugfix in CSS: don't make links bold.  (bobdenotter)

This PR was merged into the 2.3 branch.

Discussion
----------

[WebProfilerBundle] Small bugfix in CSS: don't make links bold.

If the CSS in your application has something like `a { font-weight: bold; }` to make links bold by default, they will also show up **bold** in the profilers toolbar, which doesn't look right. This patch explicitly sets the font-weight to 'normal', as it should be.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

984566d Add media-query for printing: Do not print the toolbar.
cf1b7cf Update toolbar.css.twig
b6738b6 Set the font-weight for links to 'normal', to prevent ugly bold links.