Feature/minor u ifixes

* Reorganizing first launch
* Minor ui edits

Solving issues 
#145 #155 
Good advance to issue
#116 
@vincentadam87 , why does `sendBroadcast()` go here? Shouldn't it go in `StatusManager.setParametersUpdated()`? (That way the broadcast arrives only once the parameters are really updated, and it's sent each time the parameters are updated. Plus, that StatusManager function is called from inside the parameters update callback in ParametersStorage, line 525)