Adds option to send SMS containing medicine details.

Conflicts resolved
        go-app.js
	src/app.js
	test/app.test.js
Fixes indexing error for page_start on menu test.
Changes 'concat' to '+' for clarity.
Adds missing tests.
Adds comfiguration for sms test.
Repairs menu order (forgot to update between commits).
Adds test to check if sms has been sent.
Merge branch 'sms'
Merge branch 'master' of github.com:praekelt/go-mpr

Conflicts:
	go-app.js
	src/app.js
	test/app.test.js