Selección condicional dispersores

[ajpelu]

Se trata de que la selección de los dispersores sea condicional:

Ver:

• https://stackoverflow.com/questions/38372906/constrain-two-sliderinput-in-shiny-to-sum-to-100
• https://stackoverflow.com/questions/20952333/constrain-multiple-sliderinput-in-shiny-to-sum-to-100