Easy spacing fixes, trailing stuff

Remove useless trailing \
Remove trailing spaces
Add missing empty lines

autopep8 -ir -j2 --select=E301,E302,E502,W291,W293,W391 .

Diff quickly checked.

weboob/capabilities/housing.py

@@ -45,6 +45,7 @@ class HousingPhoto(CapBaseObject):
     def __repr__(self):
         return u'<HousingPhoto "%s" data=%do>' % (self.id, len(self.data) if self.data else 0)
 
+
 class Housing(CapBaseObject):
     """
     Content of a housing.
@@ -61,6 +62,7 @@ class Housing(CapBaseObject):
     photos =        Field('List of photos', list)
     details =       Field('Key/values of details', dict)
 
+
 class Query(CapBaseObject):
     """
     Query to find housings.
@@ -79,12 +81,14 @@ class Query(CapBaseObject):
     def __init__(self):
         CapBaseObject.__init__(self, '')
 
+
 class City(CapBaseObject):
     """
     City.
     """
     name =      StringField('Name of city')
 
+
 class ICapHousing(IBaseCap):
     """
     Capability of websites to search housings.