More precise descripton fo Session::cookieParam
Merge pull request #1172 from egorpromo/descript-for-sessionParam2

More precise descripton fo Session::cookieParam
Changed important log messages to info level
Added log messages to user login and logout actions.
Fixes #1176.
Refactored Session as suggested in #1172
Fixed phpDocs [skip ci]
Fixed the rest phpDocs [skip ci]
Removed links to non-existent things phpDocs [skip ci]
Update main.php
Merge pull request #1177 from nukkumatti/master

Fixed phpDocs [skip ci]
Merge pull request #1178 from slavcodev/patch-1

Update main.php
Fix phpDoc var tag format
Fix apps phpDoc and short tags
Merge pull request #1180 from slavcodev/code-style

Code style
advanced app: go back after login, not home
let base mailer store files as .eml instead of .txt

allows opening email for view in mail program directly
fixed ActiveRelation::__clone() to work with via relation
Little helpful description for Session::cookieParam
Merge pull request #1188 from egorpromo/little-description-for-cookiePram

Little helpful description for Session::cookieParam