Reducing these values avoid going over the max number of file descriptors when refreshing lot of feeds

Prevent sub and sup from affecting line-height.

Set touch-action on .items to prevent browser navigation.

Move font-family specific CSS to the appropriate file.

Update primary font-family for UI to be even more
compatible with various operating systems.

Make .entry-content font-weight variable depending
on font-family used.

Also includes few database improvements:

- Speed up entries clean up with an index and a goroutine
- Avoid the accumulation of enclosures for some feeds

Bumps [github.com/gorilla/mux](https://github.com/gorilla/mux) from 1.7.4 to 1.8.0.
- [Release notes](https://github.com/gorilla/mux/releases)
- [Commits](https://github.com/gorilla/mux/compare/v1.7.4...v1.8.0

)

Signed-off-by: dependabot[bot] <support@github.com>

This reverts commit 5ac55518.

Google Authentication doesn't work when Cookies are using strict mode.

This will force the form to be populated with a valid token.