change lobby ui

[vtm9]

Improve Lobby page

[codecov-io]

Codecov Report

Merging #873 (0fba7df) into master (13199e1) will decrease coverage by 1.32%.
The diff coverage is 81.81%.

@@            Coverage Diff             @@
##           master     #873      +/-   ##
==========================================
- Coverage   79.88%   78.56%   -1.33%     
==========================================
  Files          88       89       +1     
  Lines        1601     1628      +27     
==========================================
  Hits         1279     1279              
- Misses        322      349      +27     

Impacted Files	Coverage Δ
...s/app/lib/codebattle_web/channels/lobby_channel.ex	57.14% <75.00%> (+23.80%)	⬆️
services/app/lib/codebattle/user/scope.ex	89.47% <100.00%> (ø)
...debattle_web/controllers/api/v1/user_controller.ex	89.47% <100.00%> (+0.58%)	⬆️
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/code_check/checker_status.ex	65.62% <0.00%> (-6.79%)	⬇️
...es/app/lib/codebattle_web/channels/game_channel.ex	80.30% <0.00%> (-6.07%)	⬇️
services/app/lib/codebattle/bot/player_server.ex	66.66% <0.00%> (ø)
services/app/lib/codebattle/game_process/play.ex	89.04% <0.00%> (ø)
services/app/lib/codebattle/code_check/checker.ex	0.00% <0.00%> (ø)
... and 2 more

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