* less buttons on step 1
* add form-group
* jump to next step as link not as button
* improve navigation bar HTML structure
* sync password-show button with extra.js
* fix CSS
* i18n: step 4: split text strings for help text (max chars default user)
* show menu button if mobile view
* improve header layout with empty div
* step 5: button in form-actions
* improve buttons in goup-controls
* Favicon added
* Button: Font color hover btn-attention
* install check step: add subtitles
* fix .btn
* improve tabindex
* improve showPW_this()
Before, the ignore info were stored in a different file which was a bit cumbersome
for new comers. Now, this info is stored directly in the translation file as a
comment.
Before, there was no way of telling translators that a previously translated string
was in need of a new translation. Now, the dirty information is there to convey that
info.
Translations had quite a lot of cleaning in late:
* Removed some unused keys
* Added some ignores
* Applied a `cli/manipulate.translation.php -a format`
