Sample Editing layout using ArcGIS.com map

- this commit closes #1 Editing maps sample
- updated samples.json for ArcGIS.com map category
- fixed Gauges widget to remove default/sample pages
Minor fix on Fade webmaps sample

- This commit closes #118
- load BorderContainer before main .js pages in the index.html page (fix
was to reorder)
- new Bug of undefined function
- removed extra code in index page from previous merge
Added File Browsing Link

- Added link to allow users of start page to quickly browse sample
files.