SeriesServiceImpl.findBy(Collection, String): add @Transactional(readOnly = true) annotation.

Should be in 227b9a5d861dc79a391d92882576f24aa0d76179 commit.

No functional changes.
SeriesServiceImpl.findBy(Country, String): add @Transactional(readOnly = true) annotation.

Should be in 6c7c88d8b6b4e084ad0c7bf8ad987fb65797aeb0 commit.

No functional changes.
SeriesServiceImpl.findBy(Category, String): add @Transactional(readOnly = true) annotation.

Should be in 9141b1fc24675a09b661333c5f5bb4a649be8344 commit.

No functional changes.