added Theme Settings

* added themeSettings.json
* themeSettings.json now feeds data for home page slider
* added /theme-settings route for use in Admin
* when on theme-settings route hide header & footer
updated categoryId to categoryIds (plural)

to match latest Storefront API changes
Changes from CR for PR115
fix build
Merge pull request #115 from kevinsproles/ecomm-method

added Theme Settings and fixed categoryId param
Updated product category urls
Merge pull request #116 from prabinv/FixURLIssues

Fix url issues
fixed descriptions not showing up