add custom css to config screen

app/views/admin/configs/_tab_layout.html.haml

@@ -1,4 +1,5 @@
 = config_input form, :page_footer, as: :text, input_html: {class: 'input-xxlarge', rows: 2, placeholder: "#{link_to(FoodsoftConfig[:name], FoodsoftConfig[:homepage])}"}
+= config_input form, :custom_css, as: :text, input_html: {class: 'input-xxlarge', rows: 3}
 
 %h4= t '.pdf_title'
 .fold-line

config/locales/en.yml

@@ -452,6 +452,7 @@ en:
         street: Address, typically this will be your delivery and pick-up location.
       currency_unit: Currency symbol for displaying prices.
       currency_space: Whether to add whitespace after the currency symbol.
+      custom_css: To modify the layout of this site, you can enter style modifications using the cascading stylesheets (CSS) language. Leave blank for the default style.
       homepage: Website of your foodcoop.
       help_url: Documentation website.
       applepear_url: Website where the apple and pear system for tasks is explained.
@@ -487,6 +488,7 @@ en:
         phone: Phone
       currency_unit: Currency
       currency_space: add space
+      custom_css: Custom CSS
       homepage: Homepage
       help_url: Documentation URL
       applepear_url: Apple system URL

config/locales/nl.yml

@@ -433,6 +433,7 @@ nl:
       contact:
         email: Algemeen contactadres, zowel voor op de website als in formulieren.
         street: Adres, meestal is dit het aflever- en ophaaladres.
+      custom_css: De layout van deze site kan gewijzigd worden door hier cascading stylesheets (CSS) in te voeren. Laat het leeg voor de standaardstijl.
       homepage: Website van de foodcoop.
       help_url: Documentatie website.
       applepear_url: Website waar het appelpunten systeem wordt uitgelegd.
@@ -466,6 +467,7 @@ nl:
         country: Land
         email: Email
         phone: Telefoon
+      custom_css: Aangepaste CSS
       homepage: Homepage
       help_url: Documentatie URL
       applepear_url: Appelsysteem uitleg URL