Started a basic interface to manipulate files in acceptance tests

- MOD: Renamed lib/deployers/cpanel_deployer.php to
       lib/deployers/cPanelDeployer.php
- MOD: Moved responsibility of reconfiguring Codeception modules to the
       deployers.
- NEW: Abstract class Deployer to standardize the interface to Deployers
- NEW: Acceptance tests now support unlinkE107ConfigFromTestEnvironment
- MOD: Removed null checks for the Deployer in the Base Module
- MOD: Improved public method naming in the Base Module
- MOD: DeployerFactory always returns a Deployer implementation now.
- MOD: InstallCest always clears out the e107_config.php file before
       each test.

lib/deployers/DummyDeployer.php

@@ -0,0 +1,17 @@
+<?php
+
+class DummyDeployer extends Deployer
+{
+
+	public function start()
+	{
+		// Noop
+		return null;
+	}
+
+	public function stop()
+	{
+		// Noop
+		return null;
+	}
+}