UI: node list step1 #154
nodes API: pagination now defaults to 50
UI minor fixes
layers: unpublish nodes when a layer is unpublished + test
layers: now depend on nodeshot.core.nodes
status: count only published nodes
nodes API: added test for search
UI: node list step2 #154
* pagination
* search
* reset search
* add node
UI: basic node search #162
UI: node list empty case #154
UI: remember coordinates when opening node details
UI: configurable map tiles fixes #122
Better management of local_settings in INSTALL procedure