because under Linux and wxWidgets 2.9, wxStaticBoxSizer are very ugly (text not readable in this dialog)
(Does not happen with wxWidgets 2.8)
Eeschema hotkeys: remove duplicate keys in key editor.
Eeschema: one string with a bad char (\a, not useable in internationalized strings).
Dialog_page_settings: use not translated strings in code, so strings can be freely translated for the UI.
(Initial code was not working with existing translations)
Update 2 icons.
sizes. Tested with postscript output only. Required minor file format changes
to reflect the "portrait" setting. common/dialogs/dialog_page_settings.cpp
uses a checkbox but its name is "Landscape", which is inverted from portrait,
but since it is the more common choice, I used that rather than portrait.
The tooltip for that checkbox makes it clear. No portrait mode is supported
for "User" paper size.