Adapt File API to modularized code base

Jira issue: WP-1015
Remove debug logs, use null

Jira issue: WP-1015
move webinos-jsonrpc2 to devDependencies

removes duplicate installs of this module when installed as part of pz[ph]

Jira issue: WP-1015
Add util.js

Utility functionality used be File API.

Jira-issue: WP-1015
Fix "Explorer undefined" error

Fix path to included script files.

Jira-issue: WP-1015
how to configure a share

Jira-issue: WP-1015
Merge pull request #2 from aldafu/wp-1015-adapt-file-api

Adapt File API to modularized code base