LadspaEffect, VstEffect: shortened plugin name

In order to display less redundancy in EffectSelectDialog, the plugin
names were shortened to "LADSPA" and "VST".

plugins/LadspaEffect/LadspaEffect.cpp

@@ -47,7 +47,7 @@ extern "C"
 Plugin::Descriptor PLUGIN_EXPORT ladspaeffect_plugin_descriptor =
 {
 	STRINGIFY( PLUGIN_NAME ),
-	"LADSPA Effect",
+	"LADSPA",
 	QT_TRANSLATE_NOOP( "pluginBrowser",
 				"plugin for using arbitrary LADSPA-effects "
 				"inside LMMS." ),

plugins/VstEffect/VstEffect.cpp

@@ -38,7 +38,7 @@ extern "C"
 Plugin::Descriptor PLUGIN_EXPORT vsteffect_plugin_descriptor =
 {
 	STRINGIFY( PLUGIN_NAME ),
-	"VST Effect",
+	"VST",
 	QT_TRANSLATE_NOOP( "pluginBrowser",
 				"plugin for using arbitrary VST effects inside LMMS." ),
 	"Tobias Doerffel <tobydox/at/users.sf.net>",