model/auth: Renamed display_name fields to name

There is no other name anymore...
model/auth: Fixed exception in validate_password() method

TypeError: 'NoneType' object has no attribute '__getitem__'

self.password[:64] failed because self.password was None.
model/auth: Removed unused Rum code
model/auth: Use Index class to create lowercase index
model/auth: Reordered classes and members
Merge pull request #44 from Turbo87/rename-display-name

model/auth: Renamed display_name fields to name
Merge branch 'master' into auth-model

Conflicts:
	skylines/model/auth.py
Merge pull request #45 from Turbo87/auth-model

Various fixes and improvements for the auth models
scripts: Added basic database search script
search: Append joined tokens to token list only once
search: Added comments
search: Added NULL constant literal_column
search: Added search_query() function
Merge branch 'master' into search
search: Use integer cast instead of case expression
search: Renamed "relevance" factor to "weight"
search: Renamed ilike_as_int() to weighted_ilike()
search: Injected weighted_ilike() method into String type
search: Moved weighted_ilike() function into skylines.lib.sql module
tests: Added lib.sql unit test