Move configuration file to fixed directories

- Create code on configuration directory;
- Choose condifiguration directory based on the user who run the script;
- Remove var/ directory from repository;
- Use `sudo` command to create lock file;
- Use `sudo` command to remove lock file;
- Remove `SettingsDirectory` configuration in favor of a fixed
  configuration directory based on the user who uses the script;
- Create `_log` function;
- Create lock files on /var/run/deployer/*.lock.
Merge branch 'develop'