Added opportunity for view custom log file and syslog
Added reading of syslog. Fixed empty and non existed log files.
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.
Fix trash page in case of mfsmaster stop
Added default path for backup to config. Fixed backup_helper.
moosefs_tool.ini updated: added trash_path and backup_path to "roots" section
Merge pull request #38 from AnaPana/master

Log viewer and trash section updated