Move LINK_ID and SCOPE_PATH regular expressions to soc/models/linkable.py.
Fix some too-long lines. Change key names back to type:scope_path/link_id
(instead of type:scope_path:link_id). Some minor __doc__ string updates.
Patch by: Todd Larsen
from django.dispatch import Signal
class_prepared = Signal(providing_args=["class"])
pre_init = Signal(providing_args=["instance", "args", "kwargs"])
post_init = Signal(providing_args=["instance"])
pre_save = Signal(providing_args=["instance", "raw"])
post_save = Signal(providing_args=["instance", "raw", "created"])
pre_delete = Signal(providing_args=["instance"])
post_delete = Signal(providing_args=["instance"])
post_syncdb = Signal(providing_args=["class", "app", "created_models", "verbosity", "interactive"])