Bug Print when map.resolutions is null

Using map.scales if map.resolutions is null
Baselayers - enable external Lizmap layers as base layers

* external lizmap baselayers must be configured in Lizmap plugin
* Web client calls layers from given external lizmap project (via repository, project and layer name)
Hide project and restrict access if option set in Lizmap plugin
Add Time Manger Layers

In the Time Manager div, add the layers list. Vector layers can be
grouped. In teh config the user can add group and groupTitle parameter.
Merge branch 'master' into timemanager