Minor fixes and updates: strip leading and trailing slashes from custom page name in url hash or query string; removed rogue semicolon; added methods to render and retrieve table HTML using XNAT.table(); added usage comment in 'hello.vm'.

Added fail-safe defaults to DatabaseConfig. Removed SpawnerConfig but added reference to spawner library SpawnerConfig to WebConfig. Added /xapi path to Swagger configuration. Added mavenLocal() to publishing repositories in build file.

Moving Theme redirection and script/style page imports to htmlOpen.vm for better coverage instead of HeaderIncludes

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.

Moving ThemeService interface, implementation and ThemeConfig to XDAT core project and updating references to new packages in other dependencies that had to move as well.

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

Merge commit '37317f9f'

# Conflicts:
#	.gitignore
#	build.gradle
#	src/main/java/org/nrg/xdat/om/base/BaseXnatDicomseries.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatExperimentdata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatImageassessordata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatImagescandata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatImagesessiondata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatProjectdata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatPublicationresource.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatPvisitdata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatReconstructedimagedata.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatResource.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatResourcecatalog.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatResourceseries.java
#	src/main/java/org/nrg/xdat/om/base/BaseXnatSubjectdata.java

serializer service rather than separate object mapper instances.
Integrated spawner functions. Moved from using resource resolver
directly to using XnatResourceLocator.

Fixed function name.

deployToTomcat task. Added some common ignore templates.

Adding files for Admin UI spawning: tabs.js for overall rendering of tabbed interfaces, panel.js for rendering individual panel elements, jquery.dataAttr.js for reconciling jQuery's .data object and [data-] element attributes, table.js for (somewhat) easier rendering of table data from an array (rows) of arrays (cells); refactored spawn.js to use best option as the main function; added methods for chainable element spawner.

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