* refactor(library): Store sectioned first before flattening it out
* fix: Fix build, also rename some variables and move stuff around
* chore: Replace findCurrentCategory with currentCategory getter
* fix: Empty category can't be collapsed
* chore: Disable file log for debug build
* fix: Entry always displayed on default category
* refactor: Specify id, source, and url directly from MangaImpl constructor
* refactor: Make LibraryManga not extend MangaImpl
* refactor: Separate placeholder from LibraryManga
* fix: Default category should always be at the very beginning
* fix: Accidentally made the entries invisible
* fix: Default category disappear everytime a new category is added