Revert "Task #199990: Pantalla Nueva Asignatura"

Conflicts:
Resources/AulaVirtual_v10.sqlite
Resources/AulaVirtual_v6.sqlite
Resources/AulaVirtual_v8.sqlite
Resources/alloy/CFG.js
app/assets/AulaVirtual_v10.sqlite
app/assets/AulaVirtual_v6.sqlite
app/assets/AulaVirtual_v8.sqlite
app/config.json