Feature/enhance search

[bertearazvan]

What does it fix?

• It adds a county dropdown and filters the search results by the given county. Moreover, it renders the extended results underneath the search bar. If there is no search criteria, the user is being redirected to /asociatii.
• It also fixes the bug where the searchbar was not responsive on screen resize.
• I have primarily checked the mainpage and /asociatii as I haven't seen the searchbar on other pages. Otherwise, let me know 👍🏼

How has it been tested?

The app was tested locally and I have created a staging deployment with raw data on this link.

[savornicesei]

This is a must have feature, as we're already in May. Can it be reviewed and deployed, please?

[tudoramariei]

Fixed by #341 and the move to 3.0.0

We're sorry we didn't act on these changes earlier. The previous code versions were more difficult to maintain, and the changes couldn't be properly checked. Thanks for all the help!