Fix for issue #194. Tooltip now updates when dropdown changes property in component property getter/setter.

Change-Id: I9a23fe93f5ba98b8a94964c37bf8e115ae0b9705
Added ProximitySensor component

Change-Id: Id51f4cab7cb817079583a5abee7342240a1b988c
Corrections on Spanish translation

Change-Id: Icc75361310163319c5c500c23971fd1e406db9bf