WordStore helper added along with corresponding tests
- language detection added
Updated AuthorizationHandler.

Logic for matching users will be added soon.
Added attribute for method-based user authorization.
Removed AuthorizationHandler from BaseManager.

The authorized user can now be retrieved using
AuthorizationHandler.AuthorizedUser.
Processed comments by teugis.
Corrected typos.
Removed some unnecessary variables.
Now allows authorization of multiple user types.
Updated AuthorizationHandler.
Added AuthorizationRequired and AuthorizationOptional attributes.

User matching and user creation implementations will follow.
Updated authorization attribute classes.
No longer expecting to receive exceptions.
Updated StringCheck (now also checks for whitespace-only strings).
Better error handling.
Merge pull request #37 from jorisvervuurt/master

Updated BaseManager, added Attribute for method-based user authorization, updated AuthorizationHandler.
Merge pull request #38 from teugis/master

Added todos and added feedbackToken parameter
Sorted usings.
Added Issuer property (contains the issuer that provided the user info)
Now creates a new user

If an AuthorizationToken is supplied in a method that uses the
AuthorizationOptional attribute, the user is matched and updated or a
new user is created.