PY-11462 Fix inability to locate code sources when hitting breakpoints located at *.py library symlinks

On collecting Remote Library sources (sys.path locations) we may download one *.py file several times: there could be one or more symlinks of it and the original file (or we may not download the original file, because it could be not on the sys.path, but in /usr/share/pyshared for example). So having several versions of the same *.py file we need to store information about breakpoints in py debugger at one common key for what real path is well suited (which will be equal for original file and symlinks to it) (and this had been already done). But when breakpoint is hit we need to send absolute path of the file to point to the actually used version of it. If we send a real path we could point to a file that is not in sys.path and had not been even downloaded (as with /usr/share/pyshared).

command line wrapper: compatibility with 141 loaded in master - non-modified PluginManager won't load plugins from classpath jar

add/remove selection by click
extra extend selection step for answer placeholders

set frame as a parent in evaluate dialogs, it prevents it from closing when opened from another evaluate dialog

make sure runnables added via ScrollingModelImpl.runActionOnScrollingFinished are executed only once, and final scrolling position is correct

IDEA-143145 com.intellij.javaee.DefaultSchemasConfigurable#isModified returns true for default value

'Project Structure' dialog: do not create old errors component at all to improve performance (IDEA-142756)