Replaced dev profile with prod.
Inline TestStrategiesConfig into StrategiesConfig.

No functional changes.
Use FilesystemImagePersistenceStrategy for prod profile.

Addressed to #132
Merge {Test,Prod}DataSource into DataSourceConfig.

No functional changes.
Use || to separate results from input in Spock tests.

@see http://docs.spockframework.org/en/latest/data_driven_testing.html#syntactic-variations

No functional changes.
Disable JSP modification checks on each request for production.

@see http://www.eclipse.org/jetty/documentation/current/configuring-jsp.html
prod: show sql queries in log.
SeriesDao.countAllStamps(): return 0 when there is no series.

Fixed displaying of index page where there is no series in database.

Exception was:
AopInvocationException: Null return value from advice does not match primitive
return type for: public abstract long ru.mystamps.web.dao.SeriesDao.countAllStamps()