moved the bg-BG translation files to the proper folder

chrome/locale/bg-BG/contents.rdf

-<?xml version="1.0"?>
-<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-         xmlns:chrome="http://www.mozilla.org/rdf/chrome#">
-
-  <!-- list all the packages being supplied by this jar -->
-  <RDF:Seq about="urn:mozilla:locale:root">
-    <RDF:li resource="urn:mozilla:locale:bg-BG"/>
-  </RDF:Seq>
-
-  <!-- locale information -->
-  <RDF:Description about="urn:mozilla:locale:bg-BG">
-
-    <chrome:packages>
-      <RDF:Seq about="urn:mozilla:locale:bg-BG:packages">
-        <RDF:li resource="urn:mozilla:locale:bg-BG:displayquota"/>
-      </RDF:Seq>
-    </chrome:packages>
-
-  </RDF:Description>
-
-</RDF:RDF>
-

chrome/locale/bg-BG/displayquota.dtd

-<!ENTITY displayquota.options.title "  DisplayQuota">
-<!ENTITY displayquota.options.label "  DisplayQuota">
-<!ENTITY displayquota.options.general "">
-<!ENTITY displayquota.options.appearance "">
-<!ENTITY displayquota.options.warnfrom "    ">
-<!ENTITY displayquota.options.whenusenotif " ">
-<!ENTITY displayquota.options.whenusenotif.always "">
-<!ENTITY displayquota.options.whenusenotif.threshold " ">
-<!ENTITY displayquota.options.whenusenotif.never "">
-<!ENTITY displayquota.options.smaller "-">
-<!ENTITY displayquota.options.larger "-">
-<!ENTITY displayquota.options.ProgressBarSize "  :">
-<!ENTITY displayquota.menu.apropos "">
-<!ENTITY displayquota.menu.options "">
-<!ENTITY displayquota.statusbar.quota "">
-<!ENTITY displayquota.alert.dontbugme "     30 ">
-<!ENTITY displayquota.alert.title "Quota Alert">

chrome/locale/bg-BG/displayquota.properties

-extensions.{c1ac4523-76c2-9995-adbd-d93bf5141bea}.description=                  .
-kilobyte=
-megabyte=
-gigabyte=
-of=
-usage=
-warnalert1=  
-warnalert2=  .
-warnalert3=      .
-overalert=  100%   .
-overalert2=        .
-noquota= 
-notimap=-IMAP 
-quotaalert=  
-quotawarning=  
-quotainfo=