fix: search through all translations of words

[JoseBritto]

Hi,

Thanks for this amazing application. Noticed that the search bar only searches for the first translation of each word.

This PR:

• Searches through all entries in translations array
• Ignores leading and trailing whitespace for search string

I'm not well versed with python, so I couldn't think of a way to do this without using for and if.

[Dzheremi2]

Thank you for your contribution. I'll test this PR out when I finally be with a PC, in 1 day approximately.

[Dzheremi2]

Looks good to me!

Also you've mentioned an accent insensitive search in #29, this is a nice idea and as you already have the code done, you can add that to this PR. But I think that this accent insensitive search should be an optinal feature (add a setting for it) for such cases when user needs to destinguish accented words from non-accented ones.

[JoseBritto]

Hi. Thanks. I'll get that code into here. I like the idea of having it as an option. I'll need to look into how to do that. I'll get some time today or tomorrow evening.

[JoseBritto]

Hi. This should be ready for review. I'm not sure about the string that should appear in the settings page. Let me know if this needs changes.

[Dzheremi2]

Just tested out and it works just fine. LGTM!

I'll merge it on August 9th or 10th.