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'.

Fixed function name.

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.

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