CLC-4128 - Fix application of customized content in Add People modal window after use of Start OVer and Add More Users button
CLC-4212 - Modify example email and UID list in textarea and error message
CLC-4212 - Applied guest user notice, with FAQ page link, to error notification
CLC-4212 - Resolved JSHINT errors
CLC-4212 - Removed redundant example input string
CLC-4212 - Updated to replace entire error message, rather than just modifying example input
Merge pull request #2908 from redconfetti/QA-CLC-4128-CLC-4212-modify-placeholder-error

[QA] CLC-4212 - Modify People addition placeholder and example error text in Canvas