Add shared scripts support
Merge remote-tracking branch 'upstream/dev' into Support-Shared-Scripts

Conflicts:
	lib/commands/mobile._js
Fix merge
filter scripts, use async for script loads
Merge remote-tracking branch 'upstream/dev' into Support-Shared-Scripts
Record shared script changes in test driver
Fix help text
Merge pull request #934 from phvannor/Support-Shared-Scripts

Expand shared scripts support