Allow to hide advanced edit buttons

This only deals with showing or hidding those buttons, but does
not deal with real persmission behind (which are handled by the
back-end).

There is at least one workaround possible for users (apart
from using the JS console): clicking the "pencil" near to the
map name in the edit bar will open the map settings. Not sure
how much we want to block this.

cf #930

umap/static/umap/js/umap.controls.js

@@ -272,8 +272,13 @@ L.U.ContinueLineAction = L.U.BaseVertexAction.extend({
   },
 })
 
-// Leaflet.Toolbar doesn't allow twice same toolbar class…
-L.U.SettingsToolbar = L.Toolbar.Control.extend({})
+L.U.SettingsToolbar = L.Toolbar.Control.extend({
+
+  addTo: function (map) {
+    if (map.options.advancedEditControl === false && !map.permissions.isOwner()) return
+    L.Toolbar.Control.prototype.addTo.call(this, map)
+  }
+})
 L.U.DrawToolbar = L.Toolbar.Control.extend({
   initialize: function (options) {
     L.Toolbar.Control.prototype.initialize.call(this, options)

umap/static/umap/js/umap.forms.js

@@ -1081,6 +1081,10 @@ L.U.FormBuilder = L.FormBuilder.extend({
       handler: 'DataLayersControl',
       label: L._('Display the data layers control'),
     },
+    advancedEditControl: {
+      handler: 'Switch',
+      label: L._('Show advanced edit buttons to other editors'),
+    },
     starControl: {
       handler: 'ControlChoice',
       label: L._('Display the star map button'),

umap/static/umap/js/umap.js

@@ -25,6 +25,7 @@ L.Map.mergeOptions({
   editInOSMControl: false,
   editInOSMControlOptions: false,
   scaleControl: true,
+  advancedEditControl: true,
   noControl: false, // Do not render any control.
   miniMap: false,
   name: '',
@@ -161,6 +162,8 @@ L.U.Map.include({
     )
       this.options.slideshow.active = true
 
+    this.permissions = new L.U.MapPermissions(this)
+
     this.initControls()
 
     // create datalayers
@@ -233,7 +236,6 @@ L.U.Map.include({
 
     this.help = new L.U.Help(this)
     this.slideshow = new L.U.Slideshow(this, this.options.slideshow)
-    this.permissions = new L.U.MapPermissions(this)
     this.initCaptionBar()
     if (this.options.allowEdit) {
       this.editTools = new L.U.Editable(this)
@@ -1209,6 +1211,7 @@ L.U.Map.include({
     'measureControl',
     'tilelayersControl',
     'starControl',
+    'advancedEditControl',
     'easing',
   ],
 
@@ -1444,6 +1447,7 @@ L.U.Map.include({
       'options.captionBar',
       'options.captionMenus',
     ])
+    if (!this.permissions.isAnonymousMap()) UIFields.push('options.advancedEditControl')
     builder = new L.U.FormBuilder(this, UIFields, {
       callback: function () {
         this.renderControls()