fix and improve result page on small screen

[hannaeko]

Purpose

Fix and improve style in result page.

Context

401 adds a regression on small devices, this PR fixes it. In addition it also adds a small vertical margin on action buttons.

Changes

• Fix regression: Remove CSS rule to avoid module name to disappear on small screen.
• Fix regression: Fix CSS selector to reduce margin in test case heading.
• Fix regression: Fix CSS selector to align correctly the test case heading when wrapped.
• Adds small vertical margin between action buttons (history, share, export) when they are collapsed. This can happen with some locales. Also fixes horizontal margin between buttons (use gap and not margin-right). Before After
• Remove useless (?) <div> container for action buttons.

How to test this PR

Navigate a test result with a small screen device (real or simulated using, for example, the firefox devtool) .

[hannaeko]

I rebased on develop.

[ghost]

v2023.1 release testing

Playing around on a small screen, everything seems to render smoothly. On remark on the export dropdown that goes outside of the viewport in some cases. However it looks like this PR was not trying to fix this issue.