First approach to the "Historical Layer"

We have completed an essential upgrade to our system and we are making first steps towards the Historical layer:

* We are creating a special category “Historical layer / disappeared places”, places with this category will only be visible from this category filter.
* All deleted places with category "historical layer" and "disappeared object" will be restored
* Categories "historical layer" and "disappeared object" will be merged into one category named “Historical layer / disappeared places”

As a result, all previously created disappeared historical places will be visible to all visitors and users through category filter without cluttering original Wikimapia map view, and it will be possible to add new places to “Historical layer” by using this category.

We are in a process of making these steps and will inform here when these steps are done.