initial tracking infrastructure
Merge branch 'master' into tracking
add GUM tracking
fix typos - syntax errors in config.js example
* in the example code for config.js in INSTALL.md
  contains three key-value-pairs not present in the example file
  'config.js.example' - these were appended without inserting a comma
  and the last two of these were commented out without removing
  the trailing comma - the example file 'config.js.example' is correct
  but using the INSTALL.md version causes the page render to halt prematurely
  making login impossible
Fixes jitsi-meet-prosody install dirs and jitsi-meet rules.
Adds certificate choices to debconf.
Adds missing templates.
Fixes a typo.
Fixes debconf questions for SSL.
Fixes SSL debconf questions.
Adds check to skip generate certs if they already exists on update.
Removes unused files.
Fixes lintian errors.
Fixes lintian errors, template needs to be updated, remove executable bit from non executable files.
Minor: remove hard-coded array length, simplify.
Fixes errors in postinst.
Fixes errors in postinst, not using our template and error about grep test.
Adds lintian-overrides.
Add a toggle button for the filmstrip in the bottom toolbar.
Merge pull request #114 from bill-auger/master

fix typos - syntax errors in config.js example