Fix import for Flask-SQLAlchemy 0.16

Use the "flask.ext" import for compatibility with old and new versions
Prepare 0.6.3 release
Add changelog info for 0.6.3
Bump version to 0.6.3.1 to re-release with changelog info
Add configuration parameter to enable profiler by default
Make profiler results sortable
Correctly try to sort all the tables possible
css selector corrections
let's use tabs if all file use them
Didn't find the original problem, seem to work fine.
Merge pull request #24 from evoloshchuk/sqlalchemy_sql_select

Didn't find the original problem, seem to work fine.
Use spaces for indentation in CSS/JS
Simplifying CSS resets
Make striped table rows work with table sorter
Merge branch 'profile-sorter'
Update example.py to use flask.ext compatibility imports.
Add a live template editor to the template panel
Add template editor note to CHANGES.rst
Merge remote-tracking branch 'evoloshchuk/enable_profiler_panel' into enable_profiler_panel
Document DEBUG_TB_PROFILER_ENABLED config option