brought back method name TemplatesPlugin.getTemplateDir, used by XML plugin
replaced requestFocus() with requestFocusInWindow() for registerList (thanks Jarek)
Feature request# 3437779: added key bindings to RegisterViewer; set inital focus to registerList
1st attempt would return a wrong extension when there's a dot in the path and no file extension, thx Matthieu
Fix for feature request 1708881 (File Browser in 4.3 pre: reset the column width when resort)
Fix for feature request 1708876 (file browser 4.3 pre wrong file type parsing)
support for fully qualified variable names like $Some::Module::test
simplified regexes for regex highlighting to avoid heavy CPU load