Removed plugin call wrapper.
Merge branch 'HEAD' of https://github.com/wpatrik14/ICTDroidLab.git

Conflicts:
	core/src/hu/edudroid/ict/PluginDetailsActivity.java
	core/src/hu/edudroid/ict/plugins/PluginBase.java
	interfaces/src/hu/edudroid/interfaces/Plugin.java