[mod] simple theme: leaflet becomes a packages.json dependency

the build of the themes updates:
* js/leaflet.js ( was leaflet/leaflet.js )
* css/leaflet.css ( was leaflet/leaflet.css )
* css/images ( was leaflet/images )

searx/static/themes/simple/gruntfile.js

@@ -23,6 +23,41 @@ module.exports = function(grunt) {
         }
       }
     },
+    copy: {
+      js: {
+        expand: true,
+        cwd: './node_modules',
+        dest: './js/',
+        flatten: true,
+        filter: 'isFile',
+        timestamp: true,
+        src: [
+          './leaflet/dist/leaflet.js',
+        ]
+      },
+      css: {
+        expand: true,
+        cwd: './node_modules',
+        dest: './css/',
+        flatten: true,
+        filter: 'isFile',
+        timestamp: true,
+        src: [
+          './leaflet/dist/leaflet.css',
+        ]
+      },
+      leaflet_images: {
+        expand: true,
+        cwd: './node_modules',
+        dest: './css/images/',
+        flatten: true,
+        filter: 'isFile',
+        timestamp: true,
+        src: [
+          './leaflet/dist/images/*.png',
+        ]
+      },
+    },
     concat: {
       head_and_body: {
         options: {
@@ -149,6 +184,7 @@ module.exports = function(grunt) {
   });
 
   grunt.loadNpmTasks('grunt-contrib-watch');
+  grunt.loadNpmTasks('grunt-contrib-copy');
   grunt.loadNpmTasks('grunt-contrib-uglify');
   grunt.loadNpmTasks('grunt-contrib-jshint');
   grunt.loadNpmTasks('grunt-contrib-concat');
@@ -158,5 +194,5 @@ module.exports = function(grunt) {
 
   grunt.registerTask('test', ['jshint']);
 
-  grunt.registerTask('default', ['jshint', 'concat', 'uglify', 'less:development', 'less:production']);
+  grunt.registerTask('default', ['jshint', 'copy', 'concat', 'uglify', 'less:development', 'less:production']);
 };

searx/static/themes/simple/src/js/main/searx_mapresult.js

@@ -31,8 +31,8 @@
       var map_boundingbox = JSON.parse(this.dataset.mapBoundingbox);
       var map_geojson = JSON.parse(this.dataset.mapGeojson);
 
-      searx.loadStyle('leaflet/leaflet.css');
-      searx.loadScript('leaflet/leaflet.js', function() {
+      searx.loadStyle('css/leaflet.css');
+      searx.loadScript('js/leaflet.js', function() {
         var map_bounds = null;
         if(map_boundingbox) {
           var southWest = L.latLng(map_boundingbox[0], map_boundingbox[2]);