Time Zones Support

1. Background

It can be challenging to implement our time zones conventions in areas of the Reference Application that do not enforce a separated client-server pattern over REST, such as in Java/Groovy Server Pages that are widespread over the Reference Application.

2. Description

The idea is to control client-server time zones conversions through a centralised global property setting: "timezone.conversions" (for backward-compatibility.)
When existing and set to a truthy value this indicates that the time zones conversions should be enforced.