Set default size to the system default
Merge branch 'Patch-Z-Use-Localized-Default-Paper-Size' into Zeripath
Change title to "file.xobj - Xournal"
Merge branch 'Patch-63b-Fix-Titlebar' into zeripath
don't use fixed size buffers for the page number
Merge branch 'Patch-63c-fix-buffers-for-page-names' into zeripath