Autofill algs in similar blocks after user chooses alg in one block

Basically prefilling algs in blocks with the same structure (i/o)

added medium label

added in-progress label

added ~1720 and removed in-progress labels

changed milestone to %Miscellaneous Editor-specific Improvements

added in-progress label

mentioned in commit 68339f7a

added blocked and removed in-progress labels

mentioned in commit 1665fe34

mentioned in commit 1aa46af1

closed via merge request !8 (merged)

closed via commit 1665fe34

mentioned in commit 6a28eda6