Dashboard should propose an easy free search

[kelson42]

Something like on https://library.kiwix.org (Kiwix Server)

If we look to https://compsci.demo.hotspot.kiwix.org/, there is so many tiles that this is very difficult to find what you search.

[lNamelessl]

I'll like to add this feature, if I get you, you want to add a search button like the in in kiwix server? @kelson42

[44yu5h]

I hope that nobody else was working on this issue.

Feel free to review this PR if you have some time. Thanks!