quassel: Fix quasselcore.service
This update fixes the following issue with quassel:
- bnc#849850: Fix quasselcore.service, EnvironmentFile belongs into [Service] section and use ${FOO} rather than $FOO for proper expansion (bnc#849850)
- Submitted by Sascha Peilicke (saschpe)
Fixed bugs
bnc#849850
quasselcore fails to start