Merge pull request #4 from nabugoon/master

add Review to schema
Strip HTML tags when generating ToC
Add close button to message dialog
.
Stricten permission to prevent writing who doesn't have read permission
Add preview
Fix broken tests
Add test runner script
Fix typo
add test for get_config FIX
add more testing ability to run_tests

1. python run_tests.py <APP_ENGINE_SDK_PATH> tests
2. python run_tests.py <APP_ENGINE_SDK_PATH> tests/test_models.py
3. python run_tests.py <APP_ENGINE_SDK_PATH> tests.test_models.WikiPageGetConfigTest
Merge pull request #5 from jangxyz/FIX-get_config

Fix Wikpage.get_config
FIX error when config page is empty

* add test
	* `tests.test_models.WikiPageGetConfigTest.test_empty_config_page`
Merge pull request #6 from jangxyz/FIX-get_config-2

FIX error when config page is empty
Support youtube video
Implement page delete