.gitignore docs/, db/data.yml, db/data.*.yml
Create LabelSet model the right way.

[#46033489]
setup default permissions for LabelSets
Whitespace in activity.rb
Mark LabelSets as children of the activity
Try to get a "new for activity" link for LabelSets
Create LabelSet model the right way.

[#46033489]
setup default permissions for LabelSets

[#46033489]
Whitespace in activity.rb
Mark LabelSets as children of the activity

[#46033489]
"New Label Set" link

[#46033489]
Fix "Data set" (s/b "Dataset") in "new" link
Ooops ... rm default permissions from LabelSet!

[#46033489]
whitespace in front_site.dryml
rearrange label_set
LabelSet's activity: don't show, disallow changing 

[#46033489]
Return to the activity after destroying LabelSet

[#46033489]
Serialize labelSets

[#46033489]
Include copied LabelSets in copied activity.

[#46033489]
Validate LabelSet name uniqueneess within activity

[#46033489]