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/jinja2/_compat.py

@@ -22,6 +22,7 @@ if not PY2:
     range_type = range
     text_type = str
     string_types = (str,)
+    integer_types = (int,)
 
     iterkeys = lambda d: iter(d.keys())
     itervalues = lambda d: iter(d.values())
@@ -51,6 +52,7 @@ else:
     text_type = unicode
     range_type = xrange
     string_types = (str, unicode)
+    integer_types = (int, long)
 
     iterkeys = lambda d: d.iterkeys()
     itervalues = lambda d: d.itervalues()
@@ -82,12 +84,6 @@ else:
             return filename.encode('utf-8')
         return filename
 
-try:
-    next = next
-except NameError:
-    def next(it):
-        return it.next()
-
 
 def with_metaclass(meta, *bases):
     # This requires a bit of explanation: the basic idea is to make a
@@ -109,42 +105,7 @@ def with_metaclass(meta, *bases):
     return metaclass('temporary_class', None, {})
 
 
-try:
-    from collections import Mapping as mapping_types
-except ImportError:
-    import UserDict
-    mapping_types = (UserDict.UserDict, UserDict.DictMixin, dict)
-
-
-# common types.  These do exist in the special types module too which however
-# does not exist in IronPython out of the box.  Also that way we don't have
-# to deal with implementation specific stuff here
-class _C(object):
-    def method(self): pass
-def _func():
-    yield None
-function_type = type(_func)
-generator_type = type(_func())
-method_type = type(_C().method)
-code_type = type(_C.method.__code__)
-try:
-    raise TypeError()
-except TypeError:
-    _tb = sys.exc_info()[2]
-    traceback_type = type(_tb)
-    frame_type = type(_tb.tb_frame)
-
-
 try:
     from urllib.parse import quote_from_bytes as url_quote
 except ImportError:
     from urllib import quote as url_quote
-
-
-try:
-    from thread import allocate_lock
-except ImportError:
-    try:
-        from threading import Lock as allocate_lock
-    except ImportError:
-        from dummy_thread import allocate_lock