Fix our Configuration reader
* replace with java.util.logging with slf4j
* use try-with-resources syntax to read the file
* add configuration dump on debug level
Fix surefire plugin system property configuration
* replaced deprecated config with the new one
* add application resource dir option
Fix the domain and path of 'korok' and 'profile' in SystemManagerBean
Make Log entity immutable
Add new email subject and body strings for daily group leader and svie admin reports
Rewrite TimerServiceBean
* replace inline email body string with a resource from the property file
* use TypedQuery everywhere
* replace inefficient multiple queries with one
* remove unused and unnecessary namedqueries
* small fix in the javadoc of MailManagerBean::sendEmail
Implement and schedule clean up expired lost password tokens (fixes #45)

Removes expired tokens on every monday morning at 2am.