Composer fixes
Refs #383 - Set up basic models for logging
TraceLog -> EventLog
Cms\ErrorLog -> System\RequestLog
Set up some basic language keys
Add settings pages for new loggers
Write trace log items to the db
Make request and access log work
Add empty log links
Translate values
Add hints to each log page. Fix preview screens for event and request logs.
Minor fixes to list setup
Use a smarter approach to logging request referers
MAke EventLog details jsonable
Improve event and request log preview pages
private -> protected
private -> protected
ru_lang
Traits use private instead of protected so they can be used/reused in base classes
Merge pull request #512 from mrmlnc/develop

[Build 131] Update ru_lang