Geocache reactivation rules defined by author

[kojoty]

This is a continuation of the #1555.

OCPL COG decided to introduce the new functionality to define reactivation rules mandatory for all geocaches (at OCPL).

Definition of the new feature:

1. Geocache edition dialog contains the mandatory field with reactivation rules
2. All existing geocaches have an empty rules but it will be necessary to define it during first edit after enabling of the feature
3. There is a set of possible predefined options for reactivation rules but no option is selected by default (user need to decide):

• "Reactivation is prohibited and there are no exceptions"
• "Reactivation is possible ONLY after direct contact with geocache author/owner"
• "Reactivation is possible BUT it MUST BE SURE that geocache is gone"
• "Any other custom rules defined directly by author of the description"

(predefined options can be defined separately in per-node config and translations - each node can decide which options are in use)

4. Reactivation rules are an optional feature so it can be enabled in per-node configuration
5. Reactivation rules are part of the geocache description and it will be served with description as octeam comments - added to the end of the description
6. New wiki page about the reactivation will be added to explain the reactivation process for the users

[kojoty]

A few screenshots: