Organizational stuff - Githubissues

[x] Create a private Google calendar that can be accessed via info@eventzimmer.de
[x] Create a heroko account via info@eventzimmer.de and the eventzimmer phone :)
[x] Once done, create an eventzimmer-obsolete orga and move old repos there
[x] Add a BPMN that better outlines the architecture of eventzimmer
[x] Add missing documentation about how redis works with api
[x] Add missing documentation about how redis works with aggregator
[x] Switch from zohoo to hosterio (for SMTP)
[x] Remove zoho account and data
[x] Add changelog to all repos
[x] Add tutorial on how to add events, sources, locations

eventzimmer / schema