I've been using an old version of Redmine while developing, and version 2.2.0 renders the plugin obsolete in this commit: https://github.com/redmine/redmine/commit/113f8b5cf278ff32bd55bf63aafe11c3f5a085f1. I'll leave this here anyway.
A plugin for Redmine 2.x that makes issues' CSS classes (in the table in the Issues tab) include their priority's name.
I needed to style issues based on priority. The CSS classes for an issue include its priority in the form priority-n where n is the priority's ID in the enumerations table. Priority IDs can be inconsistent across different environments and I needed a better way to identify them.
Create the plugins/redmine_named_priorities_plugin directory, copy init.rb into it and restart Redmine.
This plugin is released under the MIT License. Copyright (c) 2014 marquete.