Fixes #607, Don't show annotations toolbar on MIME types it doesn't support
Fixes #607, Don't show annotations toolbar on MIME types it doesn't support


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