Control de duplicados en inserts
Merge branch 'to_mvc' of https://github.com/galix85/linguam into to_mvc

Conflicts:
	bin/Linguam App.apk
	bin/classes.dex
	bin/resources.ap_
	src/com/galix/linguam/activity/Home.java
	src/com/galix/linguam/db/MySQLiteHelper.java
	src/com/galix/linguam/db/OriginalWordDBAdapter.java
	src/com/galix/linguam/db/TranslationDBAdapter.java