Harmonized the queries files and the associated meta data files
Added custom ExtendedComboBox.js component

Moved the HAI_vs_GE.report.xml report meta data file appropriately

HAI_vs_GE.Rmd :
- removed the custom style sheet definitions, setting of the markdown.HTML.header, the script tag for loading JS libraries and generating the dataTable
- set the parameters appropriately from the front-end JS UI

begin.html :
- moved the dataTable's css and JS files fetching here to the main .html file
- removed the slow query to check whether the module is enabled or not

begin.view.xml : added the dependency on the custom ExtendedComboBox.js

HAI_vs_GE.js : all of the major 'plumbing' functionality in place

HAI_vs_GE.css : added extra styles extracted from the knitr markdown document

Modified the README.md to describe the HAI_vs_GE module