Extracted class name parameter to top level in module loader.
Fixed warnings.
Refactored method name and event name storage in WiFi plugin.
Refactored plugin event listening mechanism.
Added Pair utility for later use.
Merge branch 'HEAD' of https://github.com/wpatrik14/ICTDroidLab.git

Conflicts:
	plugins/ICTDroidLabWifiPlugin/src/hu/edudroid/ictpluginwifi/WiFiPlugin.java
	plugins/ICTDroidLabWifiPlugin/src/hu/edudroid/ictpluginwifi/WiFiPluginService.java