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/flask/_compat.py

@@ -7,7 +7,7 @@
     version of six so we don't have to depend on a specific version
     of it.
 
-    :copyright: (c) 2013 by Armin Ronacher.
+    :copyright: (c) 2015 by Armin Ronacher.
     :license: BSD, see LICENSE for more details.
 """
 import sys
@@ -19,7 +19,7 @@ _identity = lambda x: x
 if not PY2:
     text_type = str
     string_types = (str,)
-    integer_types = (int, )
+    integer_types = (int,)
 
     iterkeys = lambda d: iter(d.keys())
     itervalues = lambda d: iter(d.values())
@@ -54,20 +54,35 @@ else:
 
 
 def with_metaclass(meta, *bases):
+    """Create a base class with a metaclass."""
     # This requires a bit of explanation: the basic idea is to make a
     # dummy metaclass for one level of class instantiation that replaces
-    # itself with the actual metaclass.  Because of internal type checks
-    # we also need to make sure that we downgrade the custom metaclass
-    # for one level to something closer to type (that's why __call__ and
-    # __init__ comes back from type etc.).
-    #
-    # This has the advantage over six.with_metaclass in that it does not
-    # introduce dummy classes into the final MRO.
-    class metaclass(meta):
-        __call__ = type.__call__
-        __init__ = type.__init__
+    # itself with the actual metaclass.
+    class metaclass(type):
         def __new__(cls, name, this_bases, d):
-            if this_bases is None:
-                return type.__new__(cls, name, (), d)
             return meta(name, bases, d)
-    return metaclass('temporary_class', None, {})
+    return type.__new__(metaclass, 'temporary_class', (), {})
+
+
+# Certain versions of pypy have a bug where clearing the exception stack
+# breaks the __exit__ function in a very peculiar way.  This is currently
+# true for pypy 2.2.1 for instance.  The second level of exception blocks
+# is necessary because pypy seems to forget to check if an exception
+# happened until the next bytecode instruction?
+BROKEN_PYPY_CTXMGR_EXIT = False
+if hasattr(sys, 'pypy_version_info'):
+    class _Mgr(object):
+        def __enter__(self):
+            return self
+        def __exit__(self, *args):
+            sys.exc_clear()
+    try:
+        try:
+            with _Mgr():
+                raise AssertionError()
+        except:
+            raise
+    except TypeError:
+        BROKEN_PYPY_CTXMGR_EXIT = True
+    except AssertionError:
+        pass