Update basicusage.rst

Making the import statements and instantiation of objects consistent to the example found within the Quickstart guide.

Quickstart uses import flask.ext.restless instead of from import statement.
Updated the jQuery example to match the other ones

Updated the jQuery example to match the other ones search for instances of the model ``Person`` whose names contain the letter "y".
order by primary keys if no order_by is provided
catch DataError and ProgrammingError as well as IntegrityError, as all three can be caused by an API user
Sync comments with documentation to avoid confusion about pk restrictions
fix to ProcessingException message and status

bring it inline with docs
code instead of status_code and description instead of message
slight update to authentication doc example
fix typo in basicusage.rst
Merge pull request #294 from fly/fixtypo

fix typo in basicusage.rst
Merge pull request #292 from justinwp/patch-2

slight update to authentication doc example
Merge pull request #291 from justinwp/patch-1

fix to ProcessingException message and status
Merge pull request #290 from jarmani/comments_fixes

Sync comments with documentation to avoid confusion about pk restrictions
Merge pull request #285 from talam/master

Just updated some items within your examples for consistency
Merge pull request #284 from goodscloud/catch-user-errors

catch DataError and ProgrammingError as well as IntegrityError
Records previous commit in changelog.
Merge pull request #282 from goodscloud/ordered-search

order by primary keys if no order_by is provided
Records previous commit in changelog.
Splits long line for readability.
Solved #286: Very slow response during pagination for large datasets