Reimplement Vt102Emulation::getErase() with new keyboard translator.  Fixes backspace in Vim et. al.  Correct API documentation for KeyboardTranslator::findEntry().  Use an explicit KSharedConfigPtr to get the global config when writing default profile setting.  Appears to fix strange crash on exit.

svn path=/trunk/KDE/kdebase/apps/konsole/; revision=678227