Bring documentation up to date

doc/user/events/display.rst

@@ -21,11 +21,18 @@ Frontpage text
     your product types, give more information on the event or for other general notices.
     You can use :ref:`Markdown syntax <markdown-guide>` in this field.
 
+Voucher explanation
+    This text will be shown above the voucher input box. You can use it to explain how to obtain a voucher and use it.
+
 Show variations of a product expanded by default
     If this is not checked, a product with variations will be shown as one row in the show by default and will expand
     into multiple rows once it is clicked on. With this box checked, the variations will be shown as multiple rows
     right from the beginning.
 
+Ask search engines not to index the ticket shop
+    If this is checked, we will set a HTML meta attribute asking search engines by Google not to put this ticket shop
+    into their searchable index.
+
 
 The lower part of the page contains settings that you can **either** set on organizer-level for all your events **or**
 override for this single event individually. Those are:
@@ -35,6 +42,12 @@ Primary color
     customers. We suggest not choosing something to light, since text in that color should be readable on a white
     background and white text should be readable on a background of this color.
 
+Accent color for success
+    This color will be used for success messages. We suggest to choose a dark shade of green.
+
+Accent color for errors
+    This color will be used for error messages. We suggest to choose a dark shade of red.
+
 Font
     Choose one of multiple fonts to use for your web shop.