Revert "Allow option for full time stamps"

This reverts commit 8bc9a37b96a325a642c079a58e64b6987bc071ba.
Revert "Copy text/Delete single message/timestamp options"

This reverts commit 56820690bc2191220d20c848f636e1322858616d.
Allow option for full time stamps

Allow users to display full time stamps. Also converts time stamps to
user locale-sensitive java.text.DateFormat
Merge remote-tracking branch 'origin/message-options-menu' into new-time-stamps
Merge branch 'new-time-stamps' into development

Conflicts:
	res/xml/preferences.xml