- new file item_type_filters.dart for the hiddenItemTypes function.
- reduces code duplication in statistics_screen, categories_screen and base_library_tab_screen
The "Show extensions" Button was not working properly when categories were hidden.
An Exception would throw:
```
_AssertionError ('package:flutter/src/material/tab_controller.dart': Failed assertion: line 202 pos 12: 'value >= 0 && (value < length || length == 0)': is not true.)
```
And jump to the end of the tab list regardless of where you clicked the button.
- Extract localizedItemType() from `base_library_tab_screen.dart`
- Add localizedSources() and localizedExtensions() for browse_screen.dart
- Reduce if-statements in statistics_screen.dart
- Reduce if-statements in categories_screen.dart
- Reduce if-statements in browse_screen.dart
- Change _tabList String-list to be a list of ItemType
- Change its name to _visibleTabTypes
- Use that list in getCurrentItemType(), instead of creating a new list
Use getCurrentItemType() method to determine the ItemType of the current tab instead of the conditional with `_tabBarController.index`, which doesn't take into account that there could be hidden tabs.
- Use the logger to log failed updates
- After the update-botToast another botToast is being spawned to show exactly which manga(s) couldn't be updated.
- Remove the doWhile loop because it is unnecessary. The condition of mangaList.length == numbers is always true, meaning it only runs once.
- Using round() will push values up too early.
Example: log(999) / log(1024) = 0.999
.round() = 1.
Result: 0.98 kB instead of 999 B
- Use correct units, as base1024 = KiB, MiB, etc. and base1000 = kB, MB, GB, ...
- Move the cacheDir creation to storage_provider from `others.dart`, `custom_extended_image_provider.dart` and `storage_usage.dart`.
- Use the correct directory, `getApplicationCacheDirectory()` instead of the `getTemporaryDirectory()` (which is being deleted by the OS regularly) for cache files.
- remove the `_cacheDownloadPath` from `storage_usage.dart` as the path is never being created in the first place, so using that path in `clearCache()` and `_getTotalDiskSpace()` is unnecessary.
- New switch in More > Settings > About
"Enable logging".
When ON, it inits the AppLogger and shows the "Share app logs" button below.
When OFF, it disposes the AppLogger and hides the "Share app logs" button.
It also prevents the AppLogger from init.
OFF by default.
- added localizations accordingly.
