don't set link declaration to cell, it is unused
if cell has no target and it is created by provider, it should have role and isReference too
add isReferenceCell() and isBigCell to EditorContext script
delete unused methods from old EditorCell
Merge remote-tracking branch 'remotes/origin/master' into simon
remove unused casts to old EditorCell
move dates to plugin
Merge remote-tracking branch 'remotes/origin/master' into simon
make
Merge branch '3.0/julia/master'