Inconsistent margin for solved user summary

[sam (Sam Saffron)]

@eviltrout and I have a plan to fix this, but its a pretty tedious change.

This is essentially a dupe of:

Plugin-outlet incorrectly handles multiple plugins at the same outlet

Wrong code is: https://github.com/discourse/discourse/blob/v1.4.0.beta9/app/assets/javascripts/discourse/helpers/plugin-outlet.js.es6#L158 Must be Ember.ContainerView.extend({tagName: ''}) instead of Ember.ContainerView. The current wrong code breaks HTML markup in cases where HTML syntax does not allow wrapper DIV tag. An example is admin-menu plugin outlet: https://github.com/discourse/discourse/blob/v1.4.0.beta9/app/assets/javascripts/admin/templates/admin.hbs#L26 If there are multiple…