Pressing Tab after writing a tweet should select Tweet button

[Arturo Torres Sánchez]

When using Tab to select the next button, the most common action should be chosen, which in this case is Tweet. Currently, it selects the Add Photo button.

ProblemType: Bug
DistroRelease: elementary OS 0.2
Package: birdie 0.2+r230-0+pkg7~precise1 [origin: LP-PPA-birdie-team-daily]
ProcVersionSignature: Ubuntu 3.2.0-44.69-generic-pae 3.2.44
Uname: Linux 3.2.0-44-generic-pae i686
ApportVersion: 2.0.1-0ubuntu17.2+elementary3~precise1
Architecture: i386
CrashDB: birdie
Date: Sat May 25 15:59:31 2013
ExecutablePath: /usr/bin/birdie
GsettingsChanges:
 org.pantheon.birdie compose-opening-x 695
 org.pantheon.birdie compose-opening-y 236
 org.pantheon.birdie opening-x 63
 org.pantheon.birdie opening-y 24
 org.pantheon.birdie window-height 753
InstallationMedia: elementary OS 0.2 "Luna" - Beta 1 i386 (20121114)
MarkForUpload: True
ProcEnviron:
 PATH=(custom, no user)
 LANG=eo.UTF-8
 SHELL=/bin/bash
SourcePackage: birdie
UpgradeStatus: No upgrade log present (probably fresh install)