Record plugin versions in DB and show in Shop panel

[brent-hoover]

Resolves #4874
Impact: minor
Type: feature

Issue

Have some standard way to record versions of plugins and make them visible to an admin so that you know what code is deployed

Solution

Plugins can add a "version" key to register.js and they will be stored in the db and displayed in the shop panel

Breaking changes

None

Testing

1. Add a new plugin with a register.js that looks like this:

import Reaction from "/imports/plugins/core/core/server/Reaction";

Reaction.registerPackage({
  label: "Plugin-Versions",
  name: "reaction-plugin-versions",
  version: "1.0",
  icon: "fa fa-vines",
  autoEnable: true,
  registry: [{
    provides: ["dashboard"],
    label: "Plugin Versions",
    description: "Plugin Versions",
    icon: "fa fa-vines",
    template: "PluginVersionsSettings"
  }]
});

2. Restart reaction
3. Go to the dashboard. shop settings and click on "plugin version" and observe that the version number is available there.

[aldeed]

See some minor comments

[aldeed]

In new code we name the file the same as the component, in the same case: PluginVersionsContainer.js

[aldeed]

Also there is one eslint error in plugin-versions.js

[brent-hoover]

@aldeed That "block style" rule totally bothers me as I feel like it forces me to make the code more difficult to read.

C'est la vie. All changes addressed.

[aldeed]

Added a version to a plugin and it showed up. 👍