[Feature Request] display frequency information in consistent order

[Thermospore]

(Copy paste from https://github.com/FooSoft/yomichan/issues/1340#issuecomment-780242587)

I think it would improve readability to consistently:

1. have the (_ only) elements in the same order as the top of the definition
2. have the frequency dictionaries always be in the same order you specified for them

examples:

config in these screenshots

settings file yomichan-settings-2021-02-17-01-12-44.zip

yomichan version

21.1.31.0

browser version

Google Chrome は最新版です バージョン: 88.0.4324.182（Official Build） （64 ビット）

[Thermospore]

Sweeeet, looking forward to trying it out