Set the page_size parameter of GtkAdjustments to 0 instead of 10 which is set by default by Glade. This prevents breakage of spin buttons with early versions of GTK 2.14.

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@2997 ea778897-0a13-0410-b9d1-a72fbfd435f5