Upgrade Ruby to 2.5.8

Upgrade Ruby to 2.5.8

Upgrade rails to 5.2.5

Bump font-awesome-sass from 5.0.9 to 5.2.0 (#11)

Bump coveralls from 0.7.1 to 0.8.22 (#9)

Bump bootstrap from 4.1.2 to 4.1.3 (#10)

Change to show top 100 contributors and show 20 recent answers

Add my profile to navbar dropdown

Remove recoverable from user

Make sure question number sorted ascending

Strip tags from answer.content

Sanitize answer

Add tests and make changes according to weaknesses brought up by testing

Oops missing one curly brace

Add tests