Item aliases for quick launching

[lissy93]

Category

Feature

Overview

This PR implements alias functionality in Dashy, so that you can skip Dashy alltogether and land strait on one of your apps.

• Add an alias attribute to any of your items, e.g. alias: plex
• Then, visit /[alias] to go strait there, e.g. http://dashy.local/plex
• And we've got a OpenSearch spec too, so you can add it to your browser address bar, and just type dashy plex or d plex and jump strait to that item

Issue Number

Closes #2360