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

corputils/forms.py

@@ -1,8 +1,9 @@
 from django import forms
 from django.conf import settings
+from django.utils.translation import ugettext_lazy as _
 
 from eveonline.models import EveCorporationInfo
 from eveonline.models import EveAllianceInfo
 
 class CorputilsSearchForm(forms.Form):
-    search_string = forms.CharField(max_length=254, required=True, label="", widget=forms.TextInput(attrs={'placeholder': 'Search characters...'}))
+    search_string = forms.CharField(max_length=254, required=True, label="", widget=forms.TextInput(attrs={'placeholder': _('Search characters...')}))