Templates parsed two times

[FRosner]

I restarted Broccoli and then many clients reconnected at the same time. Looks like two triggered parsing templates at once. Should we synchronize the code?

15:33:09.256 INFO de.frosner.broccoli.templates.DirectoryTemplateSource - Successfully parsed 18 templates: ...
15:33:09.257 INFO de.frosner.broccoli.templates.DirectoryTemplateSource - Successfully parsed 18 templates: ...

[FRosner]

Looks like the reason is that plays @Singleton annotation only guarantees that only one instance of the singleton object lives at the same time but it does not guarantee that multiple are constructed!