Add control for a limit of disk usage

• It can be changed from from 0% to 100% of total disk size

Roll log files

• Replace old log configuration to the log configuration in package
• Delete logs after over limit size.

Some bug

• Different versions are showed in installed software on windows

Better UX

1. two view were merged into one
2. show indexed files
3. reactive indexing
4. application information(update, issue, ...)

Better Security

1. signed app with certificate

version: 0.1
support platform: Windows (x64), OS X Yosemite