Bug - Failure of git log not managed

[pylapp]

Given I trigger the script extract-emails-from-history.sh on a repository without any commits
When the git log command is executed
The command and the scripts fail

The failure message is "fatal: your current branch 'master' does not have any commits yet" and the error code is 128

Solution: Check if there are commits and trap the failure signal:

if [ "$( git log --oneline -5 2>/dev/null | wc -l )" -eq 0 ]; then
    echo "Warning: Project '$git_based_project' is a git repository without any commit, that's weird"
    CleanFiles
    NormalExit
fi