euscanwww: PEP8, Cleaning unused imports and removing useless stuff

* Removed useless use of chords
* populate in scan_metadata is off by default
* fixed group_one and scan_metadata launch
* removed useless utils.py

Signed-off-by: volpino <fox91@anche.no>

euscanwww/djeuscan/processing/scan/scan_metadata.py

@@ -164,7 +164,7 @@ class ScanMetadata(object):
 
 
 @commit_on_success
-def scan_metadata(packages=None, category=None, logger=None, populate=True):
+def scan_metadata(packages=None, category=None, logger=None, populate=False):
     scan_handler = ScanMetadata(logger=logger)
 
     if category:

euscanwww/djeuscan/processing/scan/scan_portage.py

@@ -15,6 +15,7 @@ from djeuscan.models import Package, Version, VersionLog
 
 PORTDB = None
 
+
 class ScanPortage(object):
     def __init__(self, logger=None, no_log=False, purge_packages=False,
                  purge_versions=False):
@@ -23,8 +24,8 @@ class ScanPortage(object):
         self.purge_packages = purge_packages
         self.purge_versions = purge_versions
 
-        if not PORTDB: # Lazy loading for portdb
-            global PORTDB
+        global PORTDB
+        if not PORTDB:  # Lazy loading for portdb
             PORTDB = portage.db[portage.root]["porttree"].dbapi
 
         self.style = color_style()