Merge branch 'master' of https://github.com/owncloud/apps
Merge branch 'master' of https://github.com/owncloud/apps
Modify apps to work with new version of search

Among the changes:
 - add the ability to return all results for '*' queries
 - add event hooks for apps that did not have them
 - standardize registering of providers
 - remove providers from app directories; these are currently replaced in the oncloud/core repository in 'lib/search/providers'.
Edit documentation
Update Advanced Search app to work with mutliple result types

Also, add significant style changes.
Incorporate 'search_lucene' into Advanced Search app
Fix tab/spaces formatting issues
Delete unnecessary files
Remove unnecessary debugging code
Add Zend Lucene libraries to 'lib' directory
Move CSS call to templates
Add include path to access Zend libraries which are now stored in 'lib'