Rename @ClientDelegate to something which tells what it does

[Artur-]

The javadoc says
Publishes the annotated method so it can be invoked from the client side using the notation <code>this.$server.method()</code> in template methods

so how about a name that says it is published so it can be invoked from the client side?
Like @PublishToJS or similar?

[pleku]

@ClientSide
@ClientSideMethod
@ClientSideAvailable
@ClientMethod
@PublishToClient
@PublishToClientSide
@CallableFromClient
@AvailableOnClientSide

[pleku]

@ClientCallable won the popular vote and the lottery. Don't forget to update the demos(?), documentation.