Detecting other languages

**What problem does this solve?**
Most of us use such plugins, because English is not our first language. That means we all write also in our native language. It would be helpful that plugin would detect a "non-english" language and stop underlining everything you type - it is slightly annoying.

**Proposed Solution**
It would be helpful that plugin would detect a "non-english" language and stop underlining everything you type.

**Examples**
Na primer, takle tekst je popolnoma nesmiselno, da je ves podčrtan. Malo moti ...

**Component**
Chrome plugin

**Additional Context**
Nike - just do it! Thanks.

Start by tracing the Chrome plugin's current language-checking behavior and how it decides what text to underline. Done means non-English text is detected and no longer underlined while English checking continues, with the behavior verified in the Chrome plugin.

Written by the indexing model from the issue text.