Merge pull request #33 from AnaPana/master

Test version of log viewer
Added opportunity for view custom log file and syslog
Added reading of syslog. Fixed empty and non existed log files.
mfs_mounts method was added to moose_lib
mfs_mounts method refactoring
mfs_backup_servers  method was added
Merge branch 'log_viewer'
1. Added trash_path to moosefs config for trash path in "root" section.
2. Added opprotunity to restore files from trash.
3. Modified data view for better code optimization.