patterns 7.x-1.0-alpha2

- Don't have to prefix filenames with 'patterns.'.
- conf_path() . "/patterns/" added to pattern loading paths.
- Sections are executed sequentially both in batch and php mode
- patterns_prepare_action is also executed during the batch now
- Defalt mode: batch/php can be set by user
- Added export function with possiblity to zip
- Added some AJAX to automatic import function
- Default location to save patterns can be chosen by the user
- Patterns are loaded from : user-defined location, patterns/patterns/, sites/all/patterns/, profiles/$profile/patterns
- In the editor page 'Cancel' became 'Back'
- Code cleanup
- Partially working drush integration
- Dynamic form IDs
- Added Changelog
- Files in the PATTERNS_FILES array are automatically loaded
- PHP 5.2 as requisite
- Patterns.test: can run automatically a callback on yaml files loaded from a dir