Passing of filters among html documents repaired,
Tags and Logbooks classes unified,
search repaired so now it takes into account all of GET parameters.
Successfully saved log into database with Tags and Logbooks,
found solution for authenticating user.
Login/logout functionality implemented,
check new Log for errors and display them in the error block,
create new Logbook functionality implemented.
Authentication error implemented when new Log is created and user doesn't have enough permissions,
Log level dropdown added to new/modify Log form,
working on modify Log entry (rearranging the js code ).
Disable editing log if user is not logged in,
update Log functionality successfully implemented,
cancel saving/modifying a Log modal window functionality implemented,
modify logbook functionality implemented,
delete logbook functionality implemented,
add/modify/delete a tag functionality implemented.