[skip ci] fix spanish docs and add DatePicker into conventions

fixes #5128

translate routing and bootstrapping

Updated Greek translation.

fix grammar, typo and translate conventions

Fix translate

Translate Images

[skip ci] Fix translate

[skip ci] Create French structure-overview.md

[ci skip] Create French start-looking-ahead.md

[ci skip] typo in input-forms.md

[ci skip] Translation and fix reference

[skip ci] translation to uzbek

- Fix names and references guides internals.
- Add internals Spanish translation.
- Drafting corrections Spanish guides.

[ci skip] Fix typo in Migrations guide

[skip ci] translate spanish docs