Strip more ANSI escape sequence.

`?` can be found in ANSI escape sequence. ( `[?25l` hide cursor,
`[25k`show cursor)

Closes #95

notebook/static/base/js/utils.js

@@ -348,7 +348,7 @@ define([
 
         // Strip all ANSI codes that are not color related.  Matches
         // all ANSI codes that do not end with "m".
-        var ignored_re = /(?=(\033\[[\d;=]*[a-ln-zA-Z]{1}))\1(?!m)/g;
+        var ignored_re = /(?=(\033\[[?\d;=]*[a-ln-zA-Z]{1}))\1(?!m)/g;
         txt = txt.replace(ignored_re, "");
         
         // color ansi codes

notebook/tests/base/utils.js

@@ -5,6 +5,7 @@ casper.notebook_test(function () {
         "\033[0m[\033[33mwarn\033[0m] \033[0m  https://some/url/to/a/file.ext\033[0m",
         "\033[0m[\033[31merror\033[0m] \033[0m\033[0m",
         "\033[0m[\033[31merror\033[0m] \033[0m\teven more text\033[0m",
+        "[?25hBuilding wheels for collected packages: scipy",
         "\033[0m[\033[31merror\033[0m] \033[0m\t\tand more more text\033[0m"].join("\n");
 
     var output = [
@@ -13,6 +14,7 @@ casper.notebook_test(function () {
         "[<span  class=\"ansiyellow\">warn</span>]   https://some/url/to/a/file.ext",
         "[<span  class=\"ansired\">error</span>] ",
         "[<span  class=\"ansired\">error</span>] \teven more text",
+        "Building wheels for collected packages: scipy",
         "[<span  class=\"ansired\">error</span>] \t\tand more more text"].join("\n");
 
     var result = this.evaluate(function (input) {