solution for issue #91
added Spanish language component
removed unnecessary files
added Spanish module in main pom.xml
add marytts-lang-es as a dependency in assembly plugin (as stated in: https://github.com/marytts/marytts/wiki/New-Language-Support)
Merge remote-tracking branch 'marcela/marytts-es' into incrementalityChanges

Conflicts:
	marytts-assembly/assembly-runtime/pom.xml
	marytts-builder/src/main/resources/marytts/tools/voiceimport/templates/pom.xml
	pom.xml