Gek/external actions (#827)

* WIP External actions modal frontend

* Add external action links

* Allow modal to show/hide and use a dynamic url

* Use external link object instead of just url for state

* add style and placement to external action buttons

* reformat and simplify tag list style as not to conflict with action buttons and make them look less actionable since they're not

* fix bug to open modal

* have Esc key close modal

* fix style on modal

* make modal bg darker

* close modal when you click outside of it

* fix zindex

* Add support for external action icons and colors

* Some external action modal sizing + loading spinner

Co-authored-by: Ginger Wong <omqmail@gmail.com>

models/externalAction.go

@@ -0,0 +1,17 @@
+package models
+
+// ExternalAction is a link that will open as a 3rd party action.
+type ExternalAction struct {
+	// URL is the URL to load.
+	URL string `json:"url"`
+	// Title is the name of this action, displayed in the modal.
+	Title string `json:"title"`
+	// Description is the description of this action.
+	Description string `json:"description"`
+	// Icon is the optional icon for the button associated with this action.
+	Icon string `json:"icon"`
+	// Color is the optional color for the button associated with this action.
+	Color string `json:"color"`
+	// OpenExternally states if the action should open a new tab/window instead of an internal modal.
+	OpenExternally bool `json:"openExternally"`
+}