Misc improvements

This pull request contains various improvements for Brew theme:

- Fixed padding in search results https://github.com/ShinDarth/brew/commit/c6d9f5ee61a97b648f1d93750d06fe78cf59905c
- Use of linear-gradient for navbar background color https://github.com/ShinDarth/brew/commit/0dd2d3e9c8abb5bf8de38f0cccc85d57c1d8e47a
- Showing more specific credits in footer https://github.com/ShinDarth/brew/commit/a275ef6bc23f9fbf486bb670b2eb4b6ed013043e
- Enable translations by default https://github.com/ShinDarth/brew/commit/1cd29fb0fa677c2a98e220eb369ebcbc0a39bbdf
- Improved the italian translation (this doesn't affect other languages) https://github.com/ShinDarth/brew/commit/5cf442e6974cbca02785bb7cda8ec927a9e2a45e