Rework WMSPlugin settings

[stoecker]

Currently WMS plugin stores settings in an uncommon format.

wmsplugin.default.html:http://josm.openstreetmap.de/wmsplugin/YahooDirect.html?=true
wmsplugin.default.http://onearth.jpl.nasa.gov/wms.cgi?request_GetMap&layers_global_mosaic&styles_&format_image/jpeg&=true
wmsplugin.default.http://openaerialmap.org/wms/?VERSION_1.0&request_GetMap&layers_world&styles_&format_image/jpeg&=true
wmsplugin.url.0.name=LandSat
wmsplugin.url.0.url=http://onearth.jpl.nasa.gov/wms.cgi?request=GetMap&layers=global_mosaic&styles=&format=image/jpeg&
wmsplugin.url.1.name=OpenAerial-Karte
wmsplugin.url.1.url=http://openaerialmap.org/wms/?VERSION=1.0&request=GetMap&layers=world&styles=&format=image/jpeg&
wmsplugin.url.2.name=Yahoo Sat
wmsplugin.url.2.url=html:http://josm.openstreetmap.de/wmsplugin/YahooDirect.html?
wmsplugin.url.overlap=false
wmsplugin.url.overlapEast=14
wmsplugin.url.overlapNorth=4

This should be replaced by one value per entry as a collection:
wmsplugin.url.x:

• [0] = name
• [1] = url
• [2] = display yes/no (replaces the default entries)
• [3] = PPD and/or resolution for bookmarks (maybe both)
• [4] = Cookies

NOTE: Currently Bookmarks display wrong resolution in Information display (it shows the one, which exists when loading the layer).

The old elements should be converted on-the-fly, so the parsing can be removed in future.

The overlap elements have and url in the name, which is wrong and should be removed.