added support for getPropertiesPromise and loadTextFilePromise in the objectStoreAPI
added support for getPropertiesPromise and loadTextFilePromise in the objectStoreAPI

tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces