Revert "Remove soft hyphens"

This reverts commit 4c73f8dcc4.

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -2763,9 +2763,6 @@ public class HtmlHelper {
                         continue;
                     }
 
-                    // ­
-                    text = text.replace("\u00ad", "");
-
                     // Fold white space
                     text = FOLD_WHITESPACE.matcher(text).replaceAll(" ");