Various fixes

[NicoPennec]

Problem

• Some issues raised by the code linter.
• On small screens, the top menu can be too high.
• https://github.com/cgwire/kitsu/issues/1418

Solution

• Fix lint issues.
• Use a dynamic max height according to the screen size.
• Harmonize the deletion of all tasks with that of the Shots page.

In addition, bump minor npm dependencies.