otp: Do not allow core apps to be disabled
otp: Do not allow core apps to be disabled

Closes #4621

bjorng/otp,getong/otp,potatosalad/otp,uabboli/otp,vinoski/otp,isvilen/otp,g-andrade/otp,dgud/otp,potatosalad/otp,g-andrade/otp,erlang/otp,uabboli/otp,erlang/otp,getong/otp,potatosalad/otp,emacsmirror/erlang,g-andrade/otp,uabboli/otp,emacsmirror/erlang,ferd/otp,dgud/otp,dgud/otp,dgud/otp,vinoski/otp,erlang/otp,bjorng/otp,getong/otp,dgud/otp,erlang/otp,rlipscombe/otp,jj1bdx/otp,rlipscombe/otp,rlipscombe/otp,vinoski/otp,jj1bdx/otp,jj1bdx/otp,ferd/otp,emacsmirror/erlang,mikpe/otp,isvilen/otp,emacsmirror/erlang,bjorng/otp,vinoski/otp,vinoski/otp,uabboli/otp,g-andrade/otp,dumbbell/otp,rlipscombe/otp,isvilen/otp,jj1bdx/otp,dumbbell/otp,getong/otp,ferd/otp,g-andrade/otp,dumbbell/otp,erlang/otp,emacsmirror/erlang,uabboli/otp,mikpe/otp,uabboli/otp,dumbbell/otp,potatosalad/otp,rlipscombe/otp,uabboli/otp,isvilen/otp,erlang/otp,g-andrade/otp,rlipscombe/otp,dgud/otp,ferd/otp,bjorng/otp,mikpe/otp,bjorng/otp,isvilen/otp,erlang/otp,mikpe/otp,getong/otp,mikpe/otp,dumbbell/otp,getong/otp,getong/otp,dumbbell/otp,rlipscombe/otp,emacsmirror/erlang,erlang/otp,vinoski/otp,vinoski/otp,potatosalad/otp,mikpe/otp,vinoski/otp,getong/otp,vinoski/otp,bjorng/otp,mikpe/otp,g-andrade/otp,ferd/otp,dgud/otp,g-andrade/otp,dgud/otp,uabboli/otp,dgud/otp,dumbbell/otp,jj1bdx/otp,emacsmirror/erlang,g-andrade/otp,dumbbell/otp,emacsmirror/erlang,isvilen/otp,jj1bdx/otp,potatosalad/otp,emacsmirror/erlang,rlipscombe/otp,isvilen/otp,g-andrade/otp,potatosalad/otp,ferd/otp,jj1bdx/otp,getong/otp,erlang/otp,potatosalad/otp,isvilen/otp,bjorng/otp,isvilen/otp,isvilen/otp,dumbbell/otp,potatosalad/otp,ferd/otp,rlipscombe/otp,emacsmirror/erlang,bjorng/otp,mikpe/otp,mikpe/otp,vinoski/otp,potatosalad/otp,jj1bdx/otp,ferd/otp,jj1bdx/otp,getong/otp,mikpe/otp,bjorng/otp,erlang/otp,uabboli/otp,dgud/otp,dumbbell/otp,ferd/otp,jj1bdx/otp,rlipscombe/otp,bjorng/otp