Merge pull request #11 from Hantim/Models

Active Record
Added Request class
Added post parameter validation
Fix notes in Request class
Fix notes
Merge pull request #12 from danilms/RequestClass

Added Request class
Applying Active record model
tmp
Add book page with validation
Fix notes in validation
Fix notes
Merge pull request #17 from danilms/add_book

Add book
Changed Db for login to my database
Some change in ActiveRecord, Users and Contact
Added new function in AcR and in models +corrections
Few changes in Templater and Models