Revert "Big modification (temporary)"

This reverts commit 7624673f5f317a4fb93ac0be1c5f413ce7a6b7bd.
Add subRip(.srt) import feature

Issue : #8 Open *.srt subtitle file

Import *.srt subtitle file in the subtitles table

Signed-off-by: juiice <decaen.julien@gmail.com>
Add subRip(.srt) export feature

Issue : #9 Save *.srt files

Export *.srt subtitle file from the subtitles table

Signed-off-by: juiice <decaen.julien@gmail.com>
Add settings tab

Only graphics interface preparation
Settings managment to do

Signed-off-by: juiice <decaen.julien@gmail.com>
Add DCSub(.xml) import feature

Issue : none

Import *.xml DC subtitle file in the subtitles table
Break *.srt import (to repair after all the big modifications to
implement DCSub managment)

Signed-off-by: juiice <decaen.julien@gmail.com>
Add DCSub(.xml) export feature

Issue : none

Export *.xml DC subtitle file from the subtitles table
Text font, size, color, position managment
SubRip *.srt import/export repaired
Some code cleaning, graphics rework

Signed-off-by: juiice <decaen.julien@gmail.com>
Add some shortcut

Issue : none

F1 : current subtitle start time
F2 : current subtitle end time
F3 : current subtitle end time + insert new subtitle after
F4 : insert new subtitle after current sub
Ctrl+Backspace : delete current subtitle

Some settings toolbox modification

Signed-off-by: juiice <decaen.julien@gmail.com>