Details
Description
In the PostGRID database, the table 'Layers' needs to store a range for its values.
Two columns have to be added: minimum and maximum.
The Capabilities file for those layers has to care about this range coming from the database.
If no range is specified (minimum and maximum columns empty), then the current behaviour is applied.
Finally this was not the good way to handle the minimum and maximum values. These changes have been reverted.