gnucash maint: Multiple changes pushed

[Robert Fewell]

Updated	 via  https://github.com/Gnucash/gnucash/commit/53b7cba1 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/33223970 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/5384f319 (commit)
	from  https://github.com/Gnucash/gnucash/commit/ce638f30 (commit)



commit 53b7cba11e63fc0a7ebfdcfe6903ece205f6c345
Author: Robert Fewell <14uBobIT at gmail.com>
Date:   Tue Aug 20 15:25:46 2019 +0100

    Reformat source files gnc-tree-view.c/h
    
    Replace tabs with spaces and changes spaces where appropriate.

commit 33223970916e711146d7a4182fd5f6cd6912542d
Author: Robert Fewell <14uBobIT at gmail.com>
Date:   Tue Aug 20 14:45:33 2019 +0100

    Restrict where you can click on the menu column header
    
    With the previous change clicking any where on the menu column header
    will activate the menu so this change activates the menu only in the
    area of the icon.

commit 5384f319433c99e490f7641e3cbee05eabc0b633
Author: Robert Fewell <14uBobIT at gmail.com>
Date:   Tue Aug 20 10:45:58 2019 +0100

    Stop Gtk Warning Negative content width
    
    This is caused by the spacer column being reduced as new columns are
    inserted before the menu selection column at the end. When it gets to
    a size that can not hold a valid button in the header you get the
    warning so remove the spacer column.



Summary of changes:
 gnucash/gnome-utils/gnc-tree-view.c | 605 +++++++++++++++++++-----------------
 gnucash/gnome-utils/gnc-tree-view.h |  16 +-
 2 files changed, 333 insertions(+), 288 deletions(-)