Add permissions integration tests

[dhovart]

I've added some integration tests to help with the refactoring and make sure I'm not pushing regressions. I've corrected some cases were users could add annotations or collaborators wihthout having the right to.

It would be great if you could review the different cases I've defined and tell me if they're ok.

[dhovart]

Tests should not fail anymore after https://github.com/neuroanatomy/NeuroWebLab/pull/4 is merged

[katjaq]

https://github.com/neuroanatomy/NeuroWebLab/pull/4 has been merged now

[codecov-commenter]

Codecov Report

Merging #310 (e5de228) into master (f836e35) will increase coverage by 2.39%. The diff coverage is 85.18%.

@@            Coverage Diff             @@
##           master     #310      +/-   ##
==========================================
+ Coverage   58.52%   60.92%   +2.39%     
==========================================
  Files          17       17              
  Lines        2522     2577      +55     
==========================================
+ Hits         1476     1570      +94     
+ Misses       1046     1007      -39     

Flag	Coverage Δ
integration	52.81% <81.48%> (+5.98%)	:arrow_up:
unittests	42.41% <56.79%> (+0.38%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
controller/project/project.controller.js	85.50% <82.75%> (+14.77%)	:arrow_up:
controller/checkAccess/checkAccess.js	47.47% <90.00%> (+3.90%)	:arrow_up:
controller/dataSlices/dataSlices.js	81.20% <100.00%> (+1.47%)	:arrow_up:
controller/atlasmakerServer/atlasmakerServer.js	44.29% <0.00%> (-0.11%)	:arrow_down:

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[katjaq]

Awesome! 🚀 🚀 🚀