Fix declaration order of interfaces and field types
Fix declaration order of interfaces and field types

severinh/vala,tjol/vala-tjol,jessevdk/vala,spidermonkdust/vala,kamanashisroy/aroop,playya/vala,rvu95/vala,Distrotech/vala,GNOME/vala,severinh/vala,lovebug356/vala,playya/vala,Jc2k/vala,playya/vala,rvu95/vala,tjol/vala-tjol,themiwi/vala,Distrotech/vala,themiwi/vala,spidermonkdust/vala,jessevdk/vala,frida/vala,GNOME/vala,rvu95/vala,tjol/vala-tjol,frida/vala,spidermonkdust/vala,GNOME/vala,kamanashisroy/aroop,phako/vala,frida/vala,flobrosch/vala-fixes,GNOME/vala,themiwi/vala,frida/vala,phako/vala,flobrosch/vala-fixes,frida/vala,kamanashisroy/aroop,jessevdk/vala,xdave/pvala,lovebug356/vala,Jc2k/vala,Distrotech/vala,severinh/vala,flobrosch/vala-fixes