[css-text] Add form feed to list of exceptional characters. Need to go back and add in what *should* be done with it, plus tests. Also move image.

Author: fantasai

…images/opening-brackets-at-line-head.png …images/opening-brackets-at-line-head.pngcss-text/images/opening-brackets-at-line-head.png renamed to css-text-4/images/opening-brackets-at-line-head.png css-text/images/opening-brackets-at-line-head.png renamed to css-text-4/images/opening-brackets-at-line-head.png

@@ -616,7 +616,7 @@ Languages and Typesetting</h4>
 
   <p>
     Control characters (<a>Unicode category</a> <code>Cc</code>)
-    other than tab (U+0009), line feed (U+000A), and carriage return (U+000D)
+    other than tab (U+0009), line feed (U+000A), form feed (U+000C), and carriage return (U+000D)
     must be rendered as a visible glyph
     and otherwise treated as any other character
     of the Other Symbols (<code>So</code>) <a>general category</a> and Common <a lt="Unicode script">script</a>.

css-text/Overview.bs

@@ -779,4 +779,11 @@ From:     Koji Ishii
 Comment:  http://lists.w3.org/Archives/Public/www-style/2014Aug/0030.html
 Open:
 ----
-
+Issue 90.
+Summary:  Syncrhonize definition of white space across Web Platform
+From:     David Baron
+Comment:  https://lists.w3.org/Archives/Public/www-style/2015Aug/0237.html
+Response: https://lists.w3.org/Archives/Public/www-style/2015Sep/0103.html
+Closed:   Accepted
+Resolved: https://lists.w3.org/Archives/Public/www-style/2015Sep/0165.html
+----