Show subkey and certification algorithms.

Subkey algorithms are shown in a new table column.
Uid signature algorithms are shown in the tooltip text.

global.h

@@ -20,6 +20,7 @@ const WString _APPNAME_("K7");
 const WString _APPVERSION_("2");
 const WString _SPACE_(" ");
 const WString _COLON_(":");
+const WString _DASH_("-");
 const WString _BRACKET_OPEN_("(");
 const WString _BRACKET_CLOSE_(")");
 const WString _ANGLE_BRACKET_OPEN_("<");