Re-word include dialog instructions. (This also collapses the two existing internationalized strings into a single string as a stop-gap until the new instructions are retranslated.)
Merge branch 'master' into iwehrman/issue-114

Conflicts:
	nls/fr/strings.js
Merge pull request #119 from adobe/iwehrman/issue-114

[MERGE AFTER PREVIEW 4] Re-word include dialog instructions