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/signals.py

@@ -4,9 +4,9 @@
     ~~~~~~~~~~~~~
 
     Implements signals based on blinker if available, otherwise
-    falls silently back to a noop
+    falls silently back to a noop.
 
-    :copyright: (c) 2011 by Armin Ronacher.
+    :copyright: (c) 2015 by Armin Ronacher.
     :license: BSD, see LICENSE for more details.
 """
 signals_available = False
@@ -37,14 +37,15 @@ except ImportError:
             temporarily_connected_to = connected_to = _fail
         del _fail
 
-# the namespace for code signals.  If you are not flask code, do
+# The namespace for code signals.  If you are not flask code, do
 # not put signals in here.  Create your own namespace instead.
 _signals = Namespace()
 
 
-# core signals.  For usage examples grep the sourcecode or consult
+# Core signals.  For usage examples grep the source code or consult
 # the API documentation in docs/api.rst as well as docs/signals.rst
 template_rendered = _signals.signal('template-rendered')
+before_render_template = _signals.signal('before-render-template')
 request_started = _signals.signal('request-started')
 request_finished = _signals.signal('request-finished')
 request_tearing_down = _signals.signal('request-tearing-down')