Host WebDAV launcher add-on for Firefox at Mozilla and provide information for people wanting to install it

People who use the Office Connector with Firefox need to install a Firefox add-on called the "WebDAV Launcher" if they want to edit Office documents from Confluence. See our docs:
http://confluence.atlassian.com/display/DOC/Installing+the+Firefox+Add-On+for+the+Office+Connector

At the moment, we do not give any information about the add-on, such as license information, versions, update history, author information, etc. This is problematic for people who need to supply such information to comply with corporate policy before they can install the add-on.

Solution as discussed with Ryan on Friday 16 July:

• Host the WebDAV Launcher add-on at Mozilla.
• Rename the WebDAV Launcher to include the name "Atlassian" in the title: "Atlassian WebDAV Launcher".
• Change the "Home Page" link in the add-on metadata. At the moment, it points to "www.atlassian.com". Instead, it should point to this doc page:
  http://confluence.atlassian.com/x/A4kpCg

In addition, the tech writing team will change the above page as follows:

• Short-term: Add at least the following version and authorship information to the above doc page:

  Latest version: 1.0.4
  Compatible with: All versions of Firefox, up to and including 3.6.6
  Author: Atlassian Pty Ltd

• As soon as the add-on is hosted at Firefox: Replace the above short-term wording with a link to the add-on's page at Mozilla.