Replace http with https in the About window

Update sqlb_de.ts (sqlitebrowser#3540)

feat: Add option to auto-load 'sqlean' extension (sqlitebrowser#3357)

DB Browser for SQLite 3.12.2

DB Browser for SQLite 3.12.1

Simpler version for AppImage and branch name in the continuous release

The command `git rev-parse --abbrev-ref HEAD` is not returning the branch name
in the travis server, and for the version in AppImage filename it would be
enough to have the short commit id.

Note that these changes are branch dependant.

See issue sqlitebrowser#1092

Remover unused reference to the master branch

This command is failing

Update Arabic translation (sqlitebrowser#2406)

sqlitebrowser#2405
# Conflicts:
#	src/translations/sqlb_ar_SA.ts

DB Browser for SQLite 3.12.0

Update version number for 3.12.0