added comments to FootprintsManager
setting base properties to user's object after it is saved on server (T-6514)
added check for null on footprint (T-6514)
fixed objectId init (T-6514)
repair
repair
repair
repair
Merge branch 'master' into T-6514_object_save
Merge pull request #39 from Backendless/T-6514_object_save

T 6514 object save