Verify for new versions of plugins on crashes

[naoliv]

From #9404, I had an outdated plugin that was crashing on a newer JOSM version.
My wishlist: after a plugin crashes, could JOSM verify if a new plugin version is available and suggest to update it, please?

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-12-07 03:32:55
Last Changed Author: Don-vip
Revision: 6449
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-12-07 04:29:28 +0100 (Sat, 07 Dec 2013)
Last Changed Rev: 6449

Identification: JOSM/1.5 (6449 pt_BR) Linux Debian GNU/Linux unstable (sid)
Memory Usage: 400 MB / 1756 MB (192 MB allocated, but free)
Java version: 1.7.0_25, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u25-2.3.12-4
VM arguments: [-Djava.net.useSystemProxies=true, -Dawt.useSystemAAFontSettings=on, -Dawt.useSystemAAFontSettings=on]
Dataset consistency test: No problems found

Plugin: AddrInterpolation (30034)
Plugin: Create_grid_of_ways (29854)
Plugin: ImageryCache (29946)
Plugin: OpeningHoursEditor (29854)
Plugin: PicLayer (29854)
Plugin: SimplifyArea (30017)
Plugin: buildings_tools (30057)
Plugin: editgpx (29854)
Plugin: geotools (29767)
Plugin: jts (29854)
Plugin: merge-overlap (30034)
Plugin: notes (v0.7)
Plugin: opendata (30097)
Plugin: pdfimport (29913)
Plugin: reverter (30031)
Plugin: tagging-preset-tester (30017)
Plugin: turnrestrictions (30110)
Plugin: undelete (29854)
Plugin: utilsplugin2 (30017)

[Don-vip]

In 6797/josm:

fix #9406 - Verify for new versions of plugins on crashes