add a setCompas() method to Reloj

avoids having to create a new instance of Reloj at each change of
Estilo.
get rid of the "relojPanel" in Controller

Controller is now independent of the view.
The initialisation of reloj and its pane is moved to a RelojPaneFactory.
This will allow to make this pane more configurable easily.
add a combo box to select between several Relojs
add a "counter" reloj

not very good looking yet, but works and shows that the selection of
relojs does work.
bugfixes when changing reloj after selecting estilo
improve apperance of SimpleReloj

put the name of the beats in the middle of the beat, not the beginning
improve font size

relative to panel size.
make colors more pleasant
capitalize name
Merge branch 'reloj' into develop
already select an estilo at startup and when changing palo