Added German Translations (#406)

* Added German Translations

Translated using
https://docs.djangoproject.com/en/1.9/topics/i18n/translation/

Added language drop down menu's for base.html, registration & login
pages

Known issues:
* Translated items in whtracker>create signature remain translated when
posted
* No date/time localisation for Fleet/Structure timers

* Added time locale

Added date/time locale to
*Structure Timers
*Fleet Timers
*Fleet timer form datetimepicker.js

Fixed a bug where the bootstrap label didn't show up when making a
structure timer using the translated form

Missed some base.html translations

* Small translation error

Some obscure SRP strings went unnoticed for context review

* FAT & Fleet-up German Translations

+ a fix in settings.py.example

The only small thing not done is German Date/Time locale for Fleet-up

* Compiled de/django.po

authentication/forms.py

@@ -1,6 +1,7 @@
 from django import forms
+from django.utils.translation import ugettext_lazy as _
 
 
 class LoginForm(forms.Form):
-    username = forms.CharField(max_length=32, required=True)
-    password = forms.CharField(widget=forms.PasswordInput())
+    username = forms.CharField(label=_('Username'), max_length=32, required=True)
+    password = forms.CharField(label=_('Password'), widget=forms.PasswordInput())

authentication/views.py

@@ -4,6 +4,7 @@ from django.contrib.auth import authenticate
 from django.http import HttpResponseRedirect
 from django.shortcuts import render_to_response
 from django.template import RequestContext
+from django.utils import translation
 
 from forms import LoginForm
 
@@ -23,7 +24,7 @@ def login_user(request):
                 if user.is_active:
                     logger.info("Successful login attempt from user %s" % user)
                     login(request, user)
-                    return HttpResponseRedirect("/dashboard")
+                    return HttpResponseRedirect("/dashboard/")
                 else:
                     logger.info("Login attempt failed for user %s: user marked inactive." % user)
             else:
@@ -43,4 +44,4 @@ def logout_user(request):
     logoutUser = request.user
     logout(request)
     logger.info("Successful logout for user %s" % logoutUser)
-    return HttpResponseRedirect("/")
+    return HttpResponseRedirect("/")