Resolve #96, #102, #109, 영어 번역 (시간표 제외), 전체 디자인 점검 (시간표 제외), 팝업 구현

[hoosong0235]

[codecov]

Codecov Report

Merging #108 (6699137) into main (c3ae3ed) will decrease coverage by 0.27%.
The diff coverage is 27.66%.

@@            Coverage Diff             @@
##             main     #108      +/-   ##
==========================================
- Coverage   26.36%   26.09%   -0.27%     
==========================================
  Files          76       75       -1     
  Lines        4116     4346     +230     
==========================================
+ Hits         1085     1134      +49     
- Misses       3031     3212     +181     

Files Changed	Coverage Δ
lib/extensions/course.dart	23.52% <0.00%> (-12.84%)	⬇️
lib/extensions/lecture.dart	0.00% <0.00%> (-38.47%)	⬇️
lib/home.dart	0.00% <0.00%> (ø)
lib/pages/dictionary_page.dart	0.00% <0.00%> (ø)
lib/pages/liked_review_page.dart	0.00% <0.00%> (ø)
lib/pages/main_page.dart	0.00% <0.00%> (ø)
lib/pages/my_review_page.dart	0.00% <0.00%> (ø)
lib/pages/review_page.dart	0.00% <0.00%> (ø)
lib/pages/timetable_page.dart	3.78% <0.00%> (+0.05%)	⬆️
lib/pages/user_page.dart	0.00% <0.00%> (ø)
... and 23 more

... and 2 files with indirect coverage changes

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