Moved python version to master branch
changes in tests
Removed old tests.
Further changes for swithing to cucumber.
Moving slowly towards cucumber
Changed value_exists to support inheritance.
Renamed drop_app_inherits_from to drop_app_inheritance.
Added set_inherits_from and delete_inherits_from.
Renamed all "opion" words to "settings" as what is stored is rather
setting, not option.
Small code fixes.
get_value () throws exception if app is missing
Fixes in documentation.
Added comments to all functions.
Added documentation for functions: create_app(text, text),
Added tests for inherits_from().
Tests for creating app with inheritance.
Refactored tests, more exceptions checking, more prepared queries.
Added basic app inheritance with functions:
Added missing tests.
Completely refactored all tests to use pg_prove for easy testing.
fixes for tabs and spaces mess