Fixed issue creating new module configuration.
Fixes #166.
Closes #150.
Closes #146.
Sliders now working on second usage: WFS layer kept in the map. Messing up the Layer stack.
Merge branch 'co2'
Fixed layer selection for the slider tool.
Fixed appearence of sliders WFS layer in layer tree.
Merge branch 'webgis'
Checks for failures in automatic layer management.
Correct disposal of slider objects.
Code grooming
Added proj definition for EPSG:31467.
Fixes #175
Included basic action_mailer configurations for the production environment.
Twaked action_mailer configuration.
Changed WFS version to 1.0.0 in the Maps view.
Create migration for new reference from co2_sector to site_details, adapted model accordingly.
Seeds for LaMiLo CO2 sectors.