Documentation and localization

[micahflee]

For the 2.4.1 release we need to:

• [x] Update documentation to cover new changes, with new screenshots
• [ ] Localize everything as much as we can

[micahflee]

Updated documentation in #1479

[micahflee]

Current localization status:

App translations >= 90%
=======================
Chinese (Simplified) (zh_Hans), 100.0%
English (en), 100.0%
French (fr), 97.8%
Galician (gl), 100.0%
German (de), 100.0%
Greek (el), 100.0%
Icelandic (is), 100.0%
Japanese (ja), 100.0%
Portuguese (Brazil) (pt_BR), 100.0%
Portuguese (Portugal) (pt_PT), 91.8%
Spanish (es), 100.0%
Turkish (tr), 100.0%
Ukrainian (uk), 100.0%

App translations >= 50%
=======================
Afrikaans (af), 54.2%
Arabic (ar), 82.4%
Bengali (bn), 87.1%
Catalan (ca), 70.5%
Chinese (Traditional) (zh_Hant), 71.7%
Croatian (hr), 87.1%
Danish (da), 76.0%
Dutch (nl), 75.2%
Finnish (fi), 78.2%
Indonesian (id), 76.9%
Irish (ga), 58.1%
Italian (it), 71.3%
Kurdish (Central) (ckb), 71.3%
Lithuanian (lt), 87.1%
Norwegian Bokmål (nb_NO), 84.1%
Persian (fa), 53.8%
Polish (pl), 87.1%
Romanian (ro), 53.4%
Russian (ru), 87.1%
Serbian (latin) (sr_Latn), 85.0%
Slovak (sk), 71.3%
Swedish (sv), 88.4%
Telugu (te), 52.5%

App translations >= 0%
=======================
Amharic (am), 1.2%
Bulgarian (bg), 36.3%
Czech (cs), 30.3%
English (Middle) (enm), 0.0%
Esperanto (eo), 12.3%
Georgian (ka), 2.1%
Gujarati (gu), 4.7%
Hebrew (he), 10.2%
Hindi (hi), 42.7%
Hungarian (hu), 29.4%
Khmer (Central) (km), 0.0%
Korean (ko), 8.1%
Luganda (lg), 0.0%
Macedonian (mk), 2.9%
Malay (ms), 5.5%
Punjabi (pa), 1.2%
Shona (sn), 0.0%
Sinhala (si), 0.8%
Slovenian (sl), 11.5%
Swahili (sw), 0.4%
Wolof (wo), 0.0%
Yoruba (yo), 9.4%

Docs translations >= 90%
========================
English (en), 100%
French (fr), 100%
German (de), 100%
Greek (el), 100%
Italian (it), 95%
Norwegian Bokmål (nb_NO), 94%
Polish (pl), 96%
Portuguese (Brazil) (pt_BR), 100%
Russian (ru), 96%
Spanish (es), 100%
Turkish (tr), 100%
Ukrainian (uk), 100%

Docs translations >= 50%
========================
Dutch (nl), 53%
Finnish (fi), 81%
Japanese (ja), 55%
Kurdish (Central) (ckb), 50%
Portuguese (Portugal) (pt_PT), 63%

Docs translations >= 0%
========================
Arabic (ar), 33%
Bengali (bn), 15%
Catalan (ca), 32%
Chinese (Simplified) (zh_Hans), 46%
Chinese (Traditional) (zh_Hant), 29%
Croatian (hr), 36%
Icelandic (is), 22%
Indonesian (id), 11%
Irish (ga), 16%
Serbian (latin) (sr_Latn), 44%
Slovak (sk), 44%
Swedish (sv), 33%