allow to order tables by more fields

[kevinpapst]

Description

Fixes #1754

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I verified that my code applies to the guidelines (composer code-check)
• I updated the documentation (see here)
• I agree that this code is used in Kimai and will be published under the MIT license

[codecov]

Codecov Report

Merging #1902 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1902      +/-   ##
============================================
+ Coverage     93.18%   93.20%   +0.02%     
  Complexity     5287     5287              
============================================
  Files           501      501              
  Lines         16332    16332              
============================================
+ Hits          15219    15223       +4     
+ Misses         1113     1109       -4     

Impacted Files	Coverage Δ	Complexity Δ
src/Repository/Query/ActivityQuery.php	100.00% <ø> (ø)	13.00 <0.00> (ø)
src/Repository/Query/CustomerQuery.php	100.00% <ø> (ø)	1.00 <0.00> (ø)
src/Repository/Query/ProjectQuery.php	100.00% <ø> (ø)	17.00 <0.00> (ø)
src/Repository/TimesheetRepository.php	92.00% <0.00%> (-0.20%)	127.00% <0.00%> (ø%)
src/Controller/ProjectController.php	91.47% <0.00%> (+2.24%)	55.00% <0.00%> (ø%)