Modify pic match algorithm and the threshold value to 15
Modify the parameters
添加日志记录的全部查看功能。
	deleted:    config/locales/devise.en.yml
	deleted:    config/locales/en.yml
	deleted:    config/locales/simple_form.en.yml
	deleted:    config/locales/zh_CN.yml
Modify navbar status when logs tab selected.
Modify the height value when picture come from client upload.
Uncaching searched result in mem.
Fixed the conflicts.
Fixed the bug : the threshold value error.
Set audio field presence to false.
Migrated tables to v4.0