Fixes #1317, Sort triangle icon points in wrong direction in Firefox 3.1
Fixes #1317, Sort triangle icon points in wrong direction in Firefox 3.1

Also fixes initial items pane sort, which was previously descending until a column was clicked


LinuxMercedes/zotero,hoehnp/zotero,fbennett/zotero,sendecomp/zotero,adunning/zotero,robamler/zotero,gracile-fr/zotero,aurimasv/zotero,retorquere/zotero,retorquere/zotero,gracile-fr/zotero,robamler/zotero,rmzelle/zotero,sendecomp/zotero,retorquere/zotero,adunning/zotero,rmzelle/zotero,rmzelle/zotero,hoehnp/zotero,sendecomp/zotero,adunning/zotero,gracile-fr/zotero,LinuxMercedes/zotero,LinuxMercedes/zotero,egh/zotero,robamler/zotero,egh/zotero,egh/zotero,hoehnp/zotero