Short-term hack for prompt replies.

Added HTTP handler for prompt replies in order to prove concept.

Jira issue: WP-956
Merge remote-tracking branch 'upstream/master' into dashboard-prompting-01
Don't rely on information in serviceCache.json

Fixes "gatherLinks" message to only return available services.

Jira-issue: WP-1002
Merge pull request #12 from aldafu/WP-1002-build-serviceCache-from-available-mods

Don't rely on information in serviceCache.json
Fix service discovery not being found

As part of the others fixes for WP-848 this was missing. webinos.discovery
is now defined in the discovery wrt code itself.

Jira-issue: WP-848
Merge pull request #13 from aldafu/WP-848-fix-missing-discovery

Fix service discovery not being found
Add support for wgt:// protocol

Jira issue: wp-991
Merge pull request #14 from TobyEalden/dashboard-prompting-01

Asynchronous prompting
pass path to node_modules to module loading funcs

fixes loading api modules that are installed with npm link.

Jira-issue: WP-1018
Merge pull request #16 from aldafu/WP-1018-fix-loading-npm-linked-modules

pass path to node_modules to module loading funcs