Update WebApps URLs

Update WebApps' URL to the group's home page and added the URL for WebApps' patent commitment document.
Merge pull request #12 from AFBarstow/patch-1

Update WebApps URLs
Add "participate" block

Add a "participate" block to specify the bug/issue URL, comment list, etc.
Merge pull request #13 from AFBarstow/patch-2

Add "participate" block
Add link to live version of spec

Add link to live version of spec
Merge pull request #16 from AFBarstow/patch-3

Add link to live version of spec
Merge pull request #17 from AFBarstow/gh-pages

directory for w3.org/TR/ publication snapshots
Merge pull request #18 from AFBarstow/gh-pages

WebApps is using the 2005 Process Document (not 2014 PD)
Remove issues in the spec as they have been migrated to the GitHub's issue tracker.
Remove Specification from the title to fix the issue #15.
Use the ED stylesheet now that this spec has been published as a TR