Skill search

[nicolasdalsass]

Revamp the search function entirely :

The find icon should open a text search, searching for either skill or hero. (a la discord search, where searching search both usernames, messages, ...)
No more ugly spinners, a simple combo search tool.
Makes integrating a skill search result activity seemless instead of cluterring the UI.

[laicar]

1. Do we use a search dialog or a search widget? Basically what will the new search function look like?
2. How do we handle languages? Do we need to format the files differently?
3. How do we handle special characters not normally typeable by users like in "Rauðrowl"?