Adds description fields to Task
Adds first pass at viewing mode/adding description
toggleProperty is deprecated
Updates comments to open/close with subtask

Also adds the showingAllComments state so it shows only the first 3 until the user clicks
show all comments. Fixes #45
Remove edit icon on subtask hover
Keep viewing-mode up after subtask#save
Merge branch 'description-and-viewing' of github.com:Gowiem/Sisyphus into description-and-viewing
Adds description to subtask_params
Subtasks start in viewing mode after creating
Merges/Fixes conflicts with description-and-viewing