- Fix to ensure download webscript is only using a readonly (non-buffered) txn
- Activity creation only now performed in a new WRITE txn
- UserAgent fix - handle as lowercase to avoid "FireFox" and "Firefox" issue - also added IE11 support to RFC5987 detection
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@86278 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261