* installation of important stuff with help of AJAX

* installation will be now done with AJAX request (jQuery), that will instaltly notify about the status of the installation (no waiting without clue anymore)
* install items & weapons on installation (before monsters)

install/tools/installer.js

@@ -0,0 +1,40 @@
+function performInstall(url) {
+	var lastResponseLength = false;
+	var lastId = 1;
+
+	var ajaxRequest = $.ajax({
+		type: 'get',
+		url: url,
+		data: {},
+		dataType: 'html',
+		processData: false,
+		xhrFields: {
+			// Getting on progress streaming response
+			onprogress: function (e) {
+				var progressResponse;
+				var response = e.currentTarget.response;
+				progressResponse = response;
+				if (lastResponseLength === false) {
+					progressResponse = response;
+					lastResponseLength = response.length;
+				}
+				else {
+					progressResponse = response.substring(lastResponseLength);
+					lastResponseLength = response.length;
+				}
+
+				$('<div id="success-' + (lastId + 1) + '">' + progressResponse + '</div>').insertAfter("#success-" + lastId);
+				lastId = lastId + 1;
+			}
+		}
+	});
+	// On completed
+	ajaxRequest.done(function(data) {
+		$('#spinner').hide();
+	});
+	// On failed
+	ajaxRequest.fail(function(error){
+		console.log('Error: ', error);
+		$('<span class="error">Error while doing AJAX request. Please refresh the page.</span>').insertAfter("#success-" + lastId);
+	});
+}