New and updated files for custom page support. Put page content files in *templates/pages or in the '/pages' folder at the root of the web app. Velocity, JSP, and HTML files are supported.

Added support for initializing site URL from request URL and servlet context. Finished StringUtils migration. Added XapiRestController handling.

Made data source and Hibernate configurations populate from services.properties. Moved ORM configuration into DatabaseConfig and removed XML configuration file.

Moved SwaggerConfig operations into WebConfig and fixed paths on Swagger resource handlers. Moved UsersApi and related classes into users subpackage. Fixed timeout cookie. Moved InstanceSettings.xml to InstanceSettings.xml.sample and put InstanceSettings.xml into the .gitignore file. Updated some dependency versions.

Added session timeout back to web.xml, removed from session event publisher. Added back in missing Spring Security filter chain from move to initializer. Added missing Xalan dependency for security. Added @PreDestroy method for DICOM SCP manager.

Moved initializer and root config classes to initialization package to remove change of double-scanning. Fixed a few other items.

Fixed issue where initializing templatized DICOM file namer broke Turbine/Velocity initialization. Added initial delay to prearchive rebuild task.

XNAT-3863 - Develop support for Interface Themes, XNAT-3940 - Develop a themes subdirectories helper utility, XNAT-3941 - Store theme parameter in application context for all other pages to access

Added initialization SQL to bootstrap user info. Updated InstanceSettings.xml. Changed ${applicationRoot} to ${xnat.home} in log4j.properties. Removed my email address from services.properties. Added explicit references to 4.2.4.RELEASE versions of Spring dependencies.

integrate gradle-xnat-plugin and work out configuration for Cargo deploy
tasks.