Update routing paths

[whaught]

Update existing paths

Update our paths to the following:

• /realm/settings
• /realm/stats
• /realm/keys
• /realm/events
• /users => /realm/users
• /apikeys => /realm/api-keys
• /mobileapps => /realm/mobile-apps
• /home => /codes/issue (and rename controller)
• /stats => /codes/stats

Make moving paths less errorprone

Currently links often hard-code referenced paths, we should use templating to better ref root path / current page path so moving these would only touch one code location.

[sethvargo]

Let's brainstorm this out. Sounds like we both have some ideas 😄

[whaught]

Let's brainstorm this out. Sounds like we both have some ideas 😄

I know you love common frameworks, so I trust your ideas if you've got em

[sethvargo]

Also add tests for routes

[whaught]

Also add tests for routes

Cover: #1047

[sethvargo]

@whaught I think we should leave stats at /realm/stats as-is. While all stats are for codes, that might not be the case in the future. If you agree, let's mark this as done?