Adding tags via remote control broken

[johsin18]

Adding tags via remote control is broken, e.g. in revision r16465.

When calling e.g.

/add_node?lon=13.3&lat=53.2&addtags=natural=tree|name=%20%20%20==Great%20Oak==

as mentioned in the help, the node is created at the right location, but the tags are not set, the tag dialog does not open.

This was broken by revision r16328, where AddTagsDialog.parseUrlTagsToKeyValues was changed to return Map<String, String> instead of String[][]. This makes AddTagsDialog.addTags(final Map<String, String> args,... call itself recursively, instead of calling AddTagsDialog.addTags(String[][] keyValue,... which would open the tags dialog.

While it is a good idea to use a Map for key/value paris principle, a Map does not keep the original order, as the formerly used array did. The order might well-chosen, but would get lost in the current state of the code.