there is field in configuration allowing to provide Google Maps API key

frontend-js/src/main/js/ConfigurationType.js

@@ -3,6 +3,7 @@
 var ConfigurationType = {
   DEFAULT_MAP: "DEFAULT_MAP",
   GOOGLE_ANALYTICS_IDENTIFIER: "GOOGLE_ANALYTICS_IDENTIFIER",
+  GOOGLE_MAPS_API_KEY: "GOOGLE_MAPS_API_KEY",
   LOGO_IMG: "LOGO_IMG",
   LOGO_LINK: "LOGO_LINK",
   LEGEND_FILES: "LEGEND_FILES",

frontend-js/src/main/js/Functions.js

@@ -299,4 +299,28 @@ Functions.distance = function(p1, el2) {
     return Math.sqrt(distToSegmentSquared(p1, el2.start, el2.end));
   }
 };
+
+Functions.loadScript = function (url) {
+  return new Promise(function (resolve) {
+    var scriptExists = false;
+    var scripts = document.getElementsByTagName('script');
+    for (var i = scripts.length; i--;) {
+      if (scripts[i].src === url)
+        scriptExists = true;
+    }
+    if (!scriptExists) {
+      var head = document.getElementsByTagName('head')[0];
+      var script = document.createElement('script');
+      script.type = 'text/javascript';
+      script.src = url;
+      script.onload = function () {
+        resolve();
+      };
+      head.appendChild(script);
+    } else {
+      resolve();
+    }
+  });
+};
+
 module.exports = Functions;

model/src/main/java/lcsb/mapviewer/model/user/ConfigurationElementType.java

@@ -131,7 +131,37 @@ public enum ConfigurationElementType {
 	/**
 	 * Color used for undefined overlay values.
 	 */
-	SIMPLE_COLOR_VAL("Overlay color when no values are defined", "00FF00", ConfigurationElementEditType.COLOR, false);
+  SIMPLE_COLOR_VAL("Overlay color when no values are defined", "00FF00", ConfigurationElementEditType.COLOR, false),
+
+  /**
+   * Color used for 0 overlay value.
+   */
+  NEUTRAL_COLOR_VAL("Don't touch [12.0.x compatibility]", "FFFFFF", ConfigurationElementEditType.COLOR, false),
+
+  /**
+   * Opacity of data overlay objects in the frontend.
+   */
+  OVERLAY_OPACITY("Don't touch [12.0.x compatibility]", "0.8", ConfigurationElementEditType.DOUBLE, false),
+
+  /**
+   * Default content of the email when requesting for an account in the system.
+   */
+  REQUEST_ACCOUNT_DEFAULT_CONTENT("Don't touch [12.0.x compatibility]",
+      "Dear Disease map team,\nI would like to request an account in the system.\nKind regards",
+      ConfigurationElementEditType.STRING, true),
+
+  DEFAULT_VIEW_PROJECT("Don't touch [12.0.x compatibility]", "true", ConfigurationElementEditType.STRING, true),
+
+  DEFAULT_EDIT_COMMENTS_PROJECT("Don't touch [12.0.x compatibility]", "false", ConfigurationElementEditType.STRING,
+      true),
+
+  DEFAULT_LAYOUT_MANAGEMENT("Don't touch [12.0.x compatibility]", "false", ConfigurationElementEditType.STRING, true),
+
+  SHOW_REACTION_TYPE("Don't touch [12.0.x compatibility]", "true", ConfigurationElementEditType.STRING, true),
+
+  GOOGLE_MAPS_API_KEY("Google Maps API key", "", ConfigurationElementEditType.STRING, false),
+
+  ;
 
 	/**
 	 * Default value of the configuration parameter (it will be used only when

web/src/main/webapp/index.xhtml

@@ -11,9 +11,6 @@
  
 <h:head>
 	
-	<!-- Google Maps API version 3.20	-->
-	<script src="https://maps.google.com/maps/api/js?libraries=drawing&amp;v=3.26" type="text/javascript"/>
-
 	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" type="text/javascript"/>
 	<script src="https://twitter.github.io/typeahead.js/releases/latest/typeahead.bundle.min.js" type="text/javascript"/>
 

web/src/main/webapp/login.xhtml

@@ -12,8 +12,6 @@
     <link rel="shortcut icon" href="./resources/images/favicon.png" type="image/png"/>
     <ui:include src="/WEB-INF/components/admin/statistics.xhtml"/>
 
-    <script src="https://maps.google.com/maps/api/js?libraries=drawing&amp;v=3.26" type="text/javascript"/>
-
 
     <script src="https://code.jquery.com/jquery-1.12.1.min.js"></script>
     <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
@@ -38,9 +36,7 @@
 
         minerva.GuiConnector.init();
         minerva.ServerConnector.getSessionData(null);
-        minerva.ServerConnector.login().then(function () {
-            return minerva.ServerConnector.getProject()
-        });
+        
 
 
         function login() {
@@ -71,6 +67,16 @@
                     });
                 }
             });
+	        return minerva.ServerConnector.login().then(function () {
+	        	return minerva.ServerConnector.getConfiguration();
+	        }).then(function (configuration) {
+	        		
+	            var head = document.getElementsByTagName('head')[0];
+	            var script = document.createElement('script');
+	            script.type = 'text/javascript';
+	            script.src = "https://maps.google.com/maps/api/js?libraries=drawing&v=3.26&key=" + configuration.getOption("GOOGLE_MAPS_API_KEY");
+	            head.appendChild(script);
+    	    });
         }
 
         //]]>