rework of the server side

main change: the same server may be used for several instruments

- client classes are 'Interactors' dealing with the parameters etc.
- methods from history are added to the clients
+ improvements on the js client side

client/jsFiles/SEAWebClientCommunication.js

@@ -17,9 +17,9 @@ function buildUpdateConnection() {
 
     // Establishes server-sent-event-connection, which is used for all sorts of
     // updates and exists as long as the client is running.
-    // Executed at programstart (see also SEAWebClientMain.js).
+    // Executed at program start (see also SEAWebClientMain.js).
 
-    var path = "http://" + hostPort + "/update";
+    var path = "http://" + hostPort + "/update?" + window.clientTags;
     if (debugCommunication) {
         console.log("%cto server (SSE): " + path,
                 "color:white;background:lightblue");
@@ -29,8 +29,7 @@ function buildUpdateConnection() {
         var src = new EventSource(path);
     } catch (e) {
         console.log(e)
-        alertify.prompt(
-                        "NETWORK ERROR",
+        alertify.prompt("NETWORK ERROR",
                         "Failed to establish connection to data-server at the given address!"
                                 + "Try to enter HOST and PORT of the data-server manually!",
                         hostPort, function(evt, value) {
@@ -50,9 +49,7 @@ function buildUpdateConnection() {
     src.onerror = function(e) {
         console.log(e);
         console.log('EVTSRC error')
-        alertify
-                .prompt(
-                        "NETWORK ERROR",
+        alertify.prompt("NETWORK ERROR",
                         "Failed to establish connection to data-server at the given address!"
                                 + "Try to enter HOST and PORT of the data-server manually!",
                         hostPort, function(evt, value) {
@@ -406,10 +403,9 @@ function successHandler(s, message) {
         begin = timeRange[0] - timeRange[1];
         select.value = begin;
         // Server-request for variable-list.*/
-        console.log('TIME', window['clientTags'], timeRange)
+        console.log('TIME', timeRange)
         reqJSONPOST(0, "http://" + hostPort + "/getvars",
                 "time=" + timeRange[0] + ',' + timeRange[1]
-                + window['clientTags']
                 + "&userconfiguration=" + JSON.stringify(getFormattedUserConfigurationFromLocalStorage())
                 + "&id=" + clientID, successHandler, errorHandler);
         break;