Fixes on Timezone, Blocking call a.o.
Changes
- When a data source spans multiple timezones, the times were incorrectly represented, resolves #107
- When configuring a new entry, a blocking call error was thrown, this has been resolved, resolves: #98
- When trying to delete a data source, an error was thrown and nothing deleted, resolves (part of) #110
Possible breaking changes
Due to the high(er) complexity of working with timezones, it may (!) falter on realtime, testing was performed but please report issues ... if any