Merge pull request #479 from Jedwondle/v1.2

Added some pollyfills for empty data sets.
Updates for 4.10.2 of Solr
Merge branch 'v1.2' of https://github.com/di2e/openstorefront into v1.2
Merge pull request #480 from Jedwondle/v1.2

Added a little bit more for the compare.
Merge pull request #481 from dshurt/v1.2

STORE-232 Add Email Notification of changes
STORE-232 Add Email Notification changes
Merge branch 'v1.2' of https://github.com/di2e/openstorefront into v1.2
Merge pull request #482 from dshurt/v1.2

Amending commit