FixCommonError: now fix add missing '[' & '(' & will not ignore lines if contains '(' | '['

E.g:
==========================
P1
\- HONKING ONCE)
\- Get in.

P2
\- ONKING ONCE)
\- (Get in).

P3
ONKING ONCE)

===========================
P1
\- HONKING ONCE]
\- Get in.

P2
\- ONKING ONCE]
\- [Get in].

P3
ONKING ONCE]

=============================

Changes: https://github.com/SubtitleEdit/subtitleedit/pull/107/files