Translation of UI (german and english)

Bugfix for feeds
    - removed categories related and up
    - load new books now working
    - category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working

vendor/tornado/platform/auto.py

@@ -30,6 +30,10 @@ import os
 if os.name == 'nt':
     from tornado.platform.common import Waker
     from tornado.platform.windows import set_close_exec
+elif 'APPENGINE_RUNTIME' in os.environ:
+    from tornado.platform.common import Waker
+    def set_close_exec(fd):
+        pass
 else:
     from tornado.platform.posix import set_close_exec, Waker