Remove with count validation

Allows the frontend to retrieve elements count retrieving a page with a cursor first.
Could cause a dumb pagination to retrieve results count for each page (as with_count parameter will be present in the next URL)

mentioned in merge request frontend!731 (merged)

Codecov Report

Merging #1048 into master will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1048   +/-   ##
=======================================
  Coverage   87.89%   87.89%           
=======================================
  Files         235      235           
  Lines       15211    15211           
=======================================
  Hits        13370    13370           
  Misses       1841     1841           

Impacted Files	Coverage Δ
arkindex/project/pagination.py	100.00% <ø> (ø)
arkindex/dataimport/tests/test_process_elements.py	100.00% <100.00%> (ø)
arkindex/project/mixins.py	90.42% <100.00%> (ø)

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changed the description

added 11 commits

• 4c219366...b856f13b - 10 commits from branch master
• 4df6915a - Remove with count validation

Compare with previous version

mentioned in commit 5615dbde

merged