Filter popover scroll module list

[numahell]

• Move filter popover close button (https://github.com/GeotrekCE/Geotrek-admin/issues/2968)
• Add a scroll bar into filter form
• Add a scroll bar into module list (see https://github.com/GeotrekCE/Geotrek-admin/issues/2849)

[codecov-commenter]

Codecov Report

Merging #270 (f359885) into master (750bb42) will not change coverage. The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master     #270   +/-   ##
=======================================
  Coverage   89.08%   89.08%           
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  Files          31       31           
  Lines        2373     2373           
=======================================
  Hits         2114     2114           
  Misses        259      259