idoit-jobs: Error on using passwords with special characters

Expected behavior

Normal execution of idoit-jobs.

Actual behavior

If the password configured in /etc/i-doit/i-doit.sh contains a character you'd normally escape, the shell prints an error about that character being unexpected.

Steps to reproduce the behavior

1. In i-doit.sh, set a password with a character you'd normally escape. For me it was a ' ( '.
2. Execute idoit-jobs.

Environment

Question	Answer
i-doit version	1.13
i-doit edition	pro
Operating system (OS)	Ubuntu
OS version	18.04 LTS

Server logs

$ idoit-jobs
Perform important background tasks for i-doit
Archive i-doit logbook
/usr/local/bin/idoit-jobs: eval: line 49: syntax error near unexpected token `('
/usr/local/bin/idoit-jobs: eval: line 49: `sudo -u www-data /usr/local/bin/idoit logbook-archive --user test --password H8(8G6muBkywzVWhUOlR --tenantId 1'
Command 'logbook-archive' failed
Operation failed. Please check what is wrong and try again.