Add back path=None argument into find_module. This fixes #618 and revert #524.
Mention register_error_handler in errorhandler doc

The documentation for @errorhandler gives "app.error_handler_spec[None][404] = page_not_found" as an example for adding an error handler without the decorator.  However, register_error_handler appears to be the correct way to do this (added 0.7), and it eliminates the problems with modifying error_handler_spec directly.
Add Flask.config_class feature
Fix broken test_appcontext_signals test case

This fixes #781 and ensures that Flask is tested with blinker installed.
Merge branch '0.10-maintenance'

Conflicts:
	tox.ini
Do not test with blinker dev version
Merge branch '0.10-maintenance'
word change for clarity

changed "200 error code" to "200 status code"
fixed typo
plural
Merge pull request #784 from BobStevens/master

quickstart guide - wording changes for clarity
Merge pull request #786 from mgaitan/patch-1

Missing `s` in a plural word
Test blinker development version again

Apparently blinker isn't broken on tip anymore.
Merge branch '0.10-maintenance'
blinker repository moved to github
Merge branch '0.10-maintenance'
api.rst: fix some spelling/typos
Merge pull request #799 from cvrebert/patch-1

api.rst: fix some spelling/typos
cleared up confusion for from_envvar
Fixed a documentation typo