Feature/feedback widget

[ReDBrother]

closes #858

[codecov-io]

Codecov Report

Merging #929 (4d8051b) into master (6311bdb) will decrease coverage by 1.41%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #929      +/-   ##
==========================================
- Coverage   76.37%   74.95%   -1.42%     
==========================================
  Files          91       93       +2     
  Lines        1693     1709      +16     
==========================================
- Hits         1293     1281      -12     
- Misses        400      428      +28     

Impacted Files	Coverage Δ
services/app/lib/codebattle/feedback.ex	0.00% <0.00%> (ø)
...ttle_web/controllers/api/v1/feedback_controller.ex	0.00% <0.00%> (ø)
.../lib/codebattle_web/controllers/page_controller.ex	66.66% <0.00%> (-8.34%)	⬇️
services/app/lib/codebattle_web/views/page_view.ex	10.00% <0.00%> (-23.34%)	⬇️
services/app/lib/codebattle/chat/server.ex	67.85% <0.00%> (-21.43%)	⬇️
...es/app/lib/codebattle_web/channels/chat_channel.ex	80.00% <0.00%> (-16.67%)	⬇️
...es/app/lib/codebattle_web/channels/game_channel.ex	80.30% <0.00%> (-6.07%)	⬇️
services/app/lib/codebattle/bot/player_server.ex	63.76% <0.00%> (+1.44%)	⬆️
... and 1 more

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