Fix too long lines in soc.views.models.request, remove unused imports and change pending requests list description. Remove unused imports from soc.logic.path_link_name module. Patch by: Pawel Solyga

from query import *
from subqueries import *
from where import AND, OR
from datastructures import EmptyResultSet

__all__ = ['Query', 'AND', 'OR', 'EmptyResultSet']