#174 - Prevent duplicate names

[michael-82]

• add check if a user already has a saved query or query templated stored with the submitted label

[michael-82]

I added the missing tests (and rebased the branch onto dev)

[codecov[bot]]

Codecov Report

Merging #175 (17438d6) into develop (c37fc82) will increase coverage by 2.88%. Report is 1 commits behind head on develop. The diff coverage is 100.00%.

:exclamation: Current head 17438d6 differs from pull request most recent head 9a18b90. Consider uploading reports for the commit 9a18b90 to get more accurate results

@@              Coverage Diff              @@
##             develop     #175      +/-   ##
=============================================
+ Coverage      67.89%   70.78%   +2.88%     
- Complexity       453      475      +22     
=============================================
  Files            123      123              
  Lines           2112     2115       +3     
  Branches          99       99              
=============================================
+ Hits            1434     1497      +63     
+ Misses           621      560      -61     
- Partials          57       58       +1     

Files Changed	Coverage Δ
...ibility_gui_backend/query/QueryHandlerService.java	38.37% <100.00%> (+10.99%)	:arrow_up:
..._backend/query/templates/QueryTemplateHandler.java	95.55% <100.00%> (+93.28%)	:arrow_up:
...i_backend/query/v3/QueryHandlerRestController.java	79.83% <100.00%> (ø)

... and 4 files with indirect coverage changes

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