Changes

Improved how preferences are applied: Now, if you change any setting, it will not reload the whole app and works for languages too without restarting the app.
Fixed duplicate saved locations.
Fixed translations (#207).
Added Serbian language.
Fixed widgets (hopefully! :)
Added missing strings.
Removed the option to switch to the system font.
Added font options to choose from.
Added CM unit for precipitation.
Improved how locations load on startup.
Added caching for language status.
Added options to toggle alerts on or off.
Removed "Outfit" as a font.
Removed 486KB of garbage code.

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