Additional custom map features (#15806)

* Added options on edges for a label and to show graphs as bps as well as percentages

I think that vis.js needs to be updated to allow both bps and percentages at the same time.

* Add database migration

* Try to avoid putting multiple mid points in the same position

* Added a URL parameter for screenshot mode, where node labels are blanked out
Also fixed up the node labels in the editor

* Added legend to the editor as well as database options for reversing arrows and adjusting the edge separation

All features have been implemented in the editor, but need to be implemented in the viewer

* Fix missing defaults on the edit map list page
Added arrow reverse code to the viewer
Added legend code to the viewer
Added code to the editor to correclty handle moving the legend

* Formatting fixes and DB schema update

* Remove view from database schema

lang/en/map.php

@@ -36,6 +36,9 @@ return [
                 'width' => 'Width',
                 'height' => 'Height',
                 'alignment' => 'Node Alignment',
+                'edgeseparation' => 'Link Separation',
+                'reverse' => 'Reverse Arrows',
+                'enable_legend' => 'Enable Legend',
                 'saving' => 'Saving...',
                 'save_errors' => 'Save failed due to the following errors:',
                 'save_error' => 'Save failed.  Server returned error response code: :code',
@@ -45,6 +48,12 @@ return [
                 'edit' => 'Edit Map Settings',
                 'rerender' => 'Re-Render Map',
                 'save' => 'Save Map',
+                'legend' => [
+                    'font_size' => 'Legend Text Size',
+                    'steps' => 'Legend Steps',
+                    'hideinvalid' => 'Hide Invalid',
+                    'hideoverspeed' => 'Hide 100%+',
+                ],
             ],
             'node' => [
                 'new' => 'New Node',
@@ -126,6 +135,8 @@ return [
                     'cubicBezier' => 'Cubic Bezier',
                 ],
                 'show_usage_percent' => 'Show percent usage',
+                'show_usage_bps' => 'Show bps usage',
+                'label' => 'Label',
                 'recenter' => 'Recenter Line',
             ],
             'validate' => [