remove previous views before recreating all again
remove previous views before recreating all again

TODO: OPT: recognize which buttons already exist, which have been added and which have been removed

kkarayannis/DKAExpandingMenu,kkarayannis/DKAExpandingMenu,Adorkable-forkable/DKAExpandingMenu,Adorkable-forkable/DKAExpandingMenu,kkarayannis/DKAExpandingMenu,Adorkable-forkable/DKAExpandingMenu