Layout and text improvements

calculators/locale/bg/LC_MESSAGES/django.po

calculators/locale/bs/LC_MESSAGES/django.po

calculators/locale/de/LC_MESSAGES/django.po

calculators/locale/fi/LC_MESSAGES/django.po

calculators/locale/nb/LC_MESSAGES/django.mo

calculators/locale/nb/LC_MESSAGES/django.po

calculators/locale/vi/LC_MESSAGES/django.po

calculators/locale/zh_CN/LC_MESSAGES/django.mo

calculators/locale/zh_CN/LC_MESSAGES/django.po

calculators/locale/zh_Hans/LC_MESSAGES/django.mo

calculators/locale/zh_Hans/LC_MESSAGES/django.po

calculators/static/calculators/js/eil.js

calculators/templates/calculators/eil.html