fix: While loop final checks

[faucomte97]

• Grey out coming soon episodes
• Make hint & level fail / complete popups buttons match styles of start level popup
• Change level 109 title and description as it's no longer the final challenge

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This change is 

[codecov]

Codecov Report

Merging #1513 (4a4595e) into master (4ff42ff) will not change coverage.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1513   +/-   ##
=======================================
  Coverage   91.69%   91.69%           
=======================================
  Files         110      110           
  Lines        5864     5864           
=======================================
  Hits         5377     5377           
  Misses        487      487           

Files	Coverage Δ
game/messages.py	99.06% <100.00%> (ø)

[faucomte97]

Reviewed 2 of 4 files at r1, 3 of 3 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @faucomte97)