Create a simple thunderbird plugin

Your job will be to create a thunderbird plugin, which shows a link/button on all e-mails which contain a specific e-mail header. (like shown in the screenshot) This button/link will only be shown if: - the configured header is set AND - the header contains a link (http:// or https:// or a different protocol) This button has to be shown on e-mail-preview and on opened e-mail in a new window. On click called in a default browser automatically. The e-mail header has to be configurable, so the user can decide which header to fetch and display. The default header is: X-MailControl-ReportLink Your work has to be provided in a git-repository - which we will share on starting - on daily basis along with a status update in issues in the git-repo-tool (gitlab) Your work will contain also a [login to view URL] how to package the code into a fully workable plugin, which is providable to the online mozilla plugin page [login to view URL] We need from you the full estimate with all tasks you see in: [login to view URL] Ensure you READ EVERYTHING before asking us obvious and already answered things in this job description and in the Spreadsheet Non discus able milestones: MS1: code along with a installable XPI file which shows the configuration page for configuring the header. The Configuration will be stored also in the default and recommended config store of thunderbird MS2: a working visualization of the button/link in e-mails for the configured e-mail header. This contains the code and the packaged XPI MS3: a fully fixed and documented code basis with the description (ideally generated with a build tool) to generate the XPI file MS4: our internal tests in the team (needs about 2 weeks) So again recheck if you have: - provided your first estimate as a google-spreadsheet in your application - if your tasks are all clear what to do - if not clear, what is unclear and what needs to be cleared