Add user definible options to the print menu - slider version

Define a new frame wich will englobe the layout options.
1.-  Move to this frame the color profile printing by Amit
2.-  Add an option which switches the position of the profile and a
     predefined block comprensive of header, tanks data and notes.
             - Divide print() in two macros PROFILE_BLOCK and NOTES_BLOCK
             - Add a gboolean to print_options. If unselected (default) we
               get the actual disposition. If selected, switches blocks.
3.-  Add two buttons with labels to set the height of the profile, and tanks.
     We select the percentage of layout occupied by each option, reserving
     7% for the header (non adjustable), and assign the rest to notes.
            - Values in % have got hardcoded min/max (e.g. being the
              profile a major feature of subsurface, would be meaningless
              make it < 37%)
            - The values are initialised to the actual ones, so leaving
              them untouched defaults to the old printout.

Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

display.h

@@ -57,6 +57,8 @@ struct options {
 	enum { PRETTY, TABLE, TWOPERPAGE } type;
 	int print_selected;
 	int color_selected;
+	gboolean notes_up;
+	int profile_height, notes_height, tanks_height;
 };
 
 extern char zoomed_plot, dc_number;