Flash Messages Application's recurrency not working

[ane-gabriela]

Steps to reproduce:

1. Create a new Flash Message entry and select a Start Date from the past with time (e.g. 04/07/2018 12:27)
2. Set the Repeat option to "Yes", Repeat Interval "Daily" and Repeat Frequency "1"
3. Choose a Group (e.g. XWikiAllGroup) and write a message text
4. Click "Save & View" and check on the next day (refresh the page) at or after the initially set time

Expected results: The Flash Message Pop-up appears daily at the time selected.

Actual results: The Flash Message Pop-up does not appear.

Linked to: https://jira.xwiki.org/browse/XAFLASHM-40