reorder post buttons, with "backwards" tabindex

As per Antechinus' remarks at http://www.simplemachines.org/community/index.php?topic=523420.msg3704116
and above.
Forgot to sign off

Signed-off-by: Angelina Belle <angelinabelle1@hotmail.com>
!backwards index post button -- drafts_pm_save

Signed Off by: Angelina Belle <angelinabelle1@hotmail.com>
Add param $return to call_hook_helper()
#1895

Signed-off-by: Suki <suki@missallsunday.com>
call_hook_helper is no longer used for hooks so change the name to something more generic.

Signed-off-by: Suki <suki@missallsunday.com>
Need to pass the new param $return on index.php

Signed-off-by: Suki <suki@missallsunday.com>
Need to pass the nre $return param on Sources/Likes.php

Signed-off-by: Suki <suki@missallsunday.com>
Add the new $return param on Sources/Subs.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Reminder.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/ReportedContent.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/SplitTopics.php

Signed-off-by: Suki <suki@missallsunday.com>
integrate_ThemesMain_subActions hook

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Themes.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Xml.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Admin.php

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Calendar.php

Signed-off-by: Suki <suki@missallsunday.com>
Cleaning tabs on Class-BrowserDetect.php

Signed-off-by: Suki <suki@missallsunday.com>
integrate_Groups_subActions hook

Signed-off-by: Suki <suki@missallsunday.com>
Use call_helper() on Sources/Groups.php

Signed-off-by: Suki <suki@missallsunday.com>
integrate_ShowHelp_subActions hook

Signed-off-by: Suki <suki@missallsunday.com>