[PATCH] ValidatorDialog: Ignore button should be disabled sometimes

[GerdP]

If you run validator and it shows a list of errors or warnings, you can select the entry "Errors" or "Warnings". This will enable the Ignore Button. Clicking on this button has rather unpredictable effects
and therefore the button should be disabled unless a specific type of error is selected.
Load the attached sample.osm and run validator. You shoud get a list similar to
If you left click on Warnings the ignore button is enabled. If you click it the resulting ignore list contains

3000
303

If you select the two different types of warning and click Ignore you'll get

3000_*[amenity=place_of_worship][!religion]
303

Note that the first list will ignore all errors reported by MapCSSTagChecker while the second one is much more specific. Both will not ignore "all warnings" although that would be what I would expect to happen.
My conclusion: The button should be disabled unless the selection contains a specific error.

[GerdP]

The attached patch disables the Ignore button when the selected node has a depth > 1. Up to now I found only one glitch:
The TestError instances produced by OpeningHourTest are a bit special as they have very individual texts:

Without the patch the ignore button would be enabled and pressing it means that code 2901 is added to the ignore list, with the patch
one gets this very specific entry:
2901_opening_hours - Mo 08:00-12:00, 13:00-18:00; Di 08:00-12:00, 13:00-17:00; Mi 08:00-12:00, 13:00-18:00; Do <--- (Bitte benutze die englische Abkürzung "Th" für "do".)

While 2901 is probably too generic the latter more specific pattern is probably too specific.

[GerdP]

In 14825/josm:

fix #17345: ValidatorDialog: Ignore button should be disabled sometimes

[GerdP]

In 14858/josm:

see #17345: disable ignore button only when the top level (severity) entry is selected
This partly reverts r14825 as it also caused problems with other tests which create different description texts depending on the object(s).