WinGui: Minor improvement to tabbing on the main window. (Going to have to manually set some indexes to improve order later).  Couple of typos fixed.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6126 b64f7644-9d1e-0410-96f1-a4d463321fa5
LinGui: fix live preview generation

Preferences (where live preview duration is set) were not getting added
to live peview job settings.

Also, fix a compiler warning when using gstreamer 0.10.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6127 b64f7644-9d1e-0410-96f1-a4d463321fa5
WinGui: partially revert my last checking.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6128 b64f7644-9d1e-0410-96f1-a4d463321fa5
WinGui: Restore rolled back tabbing fix + added a check for illegal characters to the destination text box. Add to Queue will now prevent items from begin added with illegal characters also.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6129 b64f7644-9d1e-0410-96f1-a4d463321fa5