Keep occ output brackets escaped through the formatters

The overtyping and from_ansi formatters unescape brackets before they
parse the text, so escaping them beforehand was not enough: literal
brackets were still read as formatting. Enable
unixFormattingEscapeBrackets so both formatters escape the text again
after parsing. Verified in the browser: Symfony's "[alias]" in
`occ list` stays in place, ANSI colors still work, and formatting in
the output text (colors, links) is no longer applied.

Bump the version to 0.4.4 so browsers load the new script.

appinfo/info.xml

@@ -5,7 +5,7 @@
     <name>Extended OCC Web</name>
     <summary>OCC Commands in a web terminal</summary>
     <description><![CDATA[Run OCC Commands in a web terminal]]></description>
-    <version>0.4.3</version>
+    <version>0.4.4</version>
     <licence>agpl</licence>
     <author mail="dillard.blom@ensembia.com" >Dillard Blom</author>
     <namespace>OCCWeb</namespace>