Move jasmine spec in src/

[gdetrez]

Move all the *.spec.{js,jsx} files into src/. This might be a be less neat but I think it will make thing easier:

• we no longer have to maintain two parallel directory hierarchies
• github will now show a module and its tests one after the other in pull requests
• we avoid the annoying ../../src/bla/bla/bla imports (which duplicate the directory structure again)

[codecov-io]

Codecov Report

Merging #348 into master will increase coverage by 10.05%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #348       +/-   ##
===========================================
+ Coverage   39.42%   49.47%   +10.05%     
===========================================
  Files         180      225       +45     
  Lines       16451    19731     +3280     
  Branches     2890     2890               
===========================================
+ Hits         6485     9762     +3277     
- Misses       9561     9563        +2     
- Partials      405      406        +1

Impacted Files	Coverage Δ
...server_data/js/src/components/ColonyEditor.spec.js	100% <ø> (ø)
.../src/components/ScanningJobRemoveDialogue.spec.jsx	100% <ø> (ø)
...tic/ui_server_data/js/src/components/Plate.spec.js	98.18% <ø> (ø)
...ata/js/src/containers/ImageUploadContainer.spec.js	100% <ø> (ø)
...matic/ui_server_data/js/src/helpers/FakePromise.js	100% <ø> (ø)
...mponents/PolynomialResultsColonyHistogram.spec.jsx	100% <ø> (ø)
..._data/js/src/components/CCCInitialization.spec.jsx	100% <ø> (ø)
...src/containers/CCCInitializationContainer.spec.jsx	100% <ø> (ø)
...ui_server_data/js/src/components/CCCEditor.spec.js	100% <ø> (ø)
...ta/js/src/components/ScanningJobPanelBody.spec.jsx	100% <ø> (ø)
... and 81 more

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