Port SettingsVarsDebugPanel from Django DebugToolbar
Merge commit 'refs/pull/51/head' of github.com:mgood/flask-debugtoolbar

Conflicts:
	flask_debugtoolbar/toolbar.py
Remove some unneeded code from SettingsVars panel
Rename "settings" panel to "config"
Add basic sanity test
Compatibility fixes for Python 3

Fixes #54 (at least the basic stuff, this is still a bit experimental)
Fix SQLAlchemy URL registration

The init_app() restructuring in 356e6c removed "load_panels()", but need
to add it back so panels like SQLAlchemy can register their URLs on the
Blueprint before it's activated.
Add Travis build statis to README
Fix build status image

RST example copied from Travis was a bit broken
pep8 formatting + coding: utf8
remove coding:utf-8 and add some style fixes
Merge pull request #63 from defuz/pep8

PEP8 formatting
Add SQLAlchemy to test app
Bump version for new release
Fix version number in docs