Add link to Tessera
Merge pull request #774 from Kixeye/master-funcdocfix

Minor documentation fix for sumSeriesWithWildcards() function (master)
Update dashboard.rst documentation

Replaced "TODO: What does this do?" for "Breakout" operation with explanatory text.
Merge pull request #772 from aalpern/patch-1

Add link to Tessera
Merge pull request #776 from bbrown/patch-1

Update dashboard.rst documentation
Mention ImmobilienScout24 in the who-is-using
Merge pull request #778 from ImmobilienScout24/readme/mention_immo

Mention ImmobilienScout24 in the who-is-using
Merge pull request #34 from graphite-project/master

Pull in Upstream Changes