Initial PoC of a CherryPy app integrate with the runtime.

Upon startup, the runtime will attempt to locate pgAdmin4.py in a
number of different relative locations. Once found, it will execute
it in a new thread. The main window is then created and the brower's
initial page is set to the root of the CherryPy server. At present,
that's http://127.0.0.1:8080.

runtime/Server.cpp

@@ -0,0 +1,79 @@
+//////////////////////////////////////////////////////////////////////////
+//
+// pgAdmin 4 - PostgreSQL Tools
+//
+// Copyright (C) 2013, The pgAdmin Development Team
+// This software is released under the PostgreSQL Licence
+//
+// Server.cpp - Thread in which the web server will run.
+//
+//////////////////////////////////////////////////////////////////////////
+
+#include "pgAdmin4.h"
+
+// Must be before QT
+#include <Python.h>
+
+// QT headers
+#include <QMessageBox>
+
+// App headers
+#include "Server.h"
+
+Server::Server()
+{
+    // Initialise Python
+    Py_SetProgramName(PGA_APPNAME.toUtf8().data());
+    Py_Initialize();
+}
+
+Server::~Server()
+{
+    // Shutdown Python
+    Py_Finalize();
+}
+
+bool Server::Init()
+{
+    // Find the webapp
+    QStringList paths;
+    paths.append("../web/"); // Windows/Linux source tree
+    paths.append("../../../../web/"); // Mac source tree (in the app bundle)
+    paths.append(""); // Should be last!
+
+    for (int i = 0; i < paths.size(); ++i)
+    {
+        QDir dir(QCoreApplication::applicationDirPath() + "/" + paths[i]);
+        m_appfile = dir.canonicalPath() + "/pgAdmin4.py";
+
+        if (QFile::exists(m_appfile))
+        {
+            qDebug() << "Webapp path: " << m_appfile;
+            break;
+        }
+    }
+
+    if (!QFile::exists(m_appfile))
+    {
+	setError("Failed to locate pgAdmin4.py, terminating server thread.");
+        return false;
+    }
+
+    return true;
+}
+
+void Server::run()
+{
+    // Open the application code and run it.
+    FILE *cp = fopen(m_appfile.toUtf8().data(), "r");
+    if (!cp)
+    {
+        setError("Failed to open the application file: " + m_appfile + ", server thread exiting.");
+        return;
+    }
+
+    if (PyRun_SimpleFile(cp, m_appfile.toUtf8().data()) != 0)
+        setError("Failed to launch the application server, server thread exiting.");
+
+    fclose(cp);
+}