added cache mset() base test
added phpdoc block for mset()
marked mset() test incomplete
Merge branch 'master' into cache-mset
moved common parts of db ActiveRelation and Query to traits

these parts can be reused in other ActiveRecord implementations
add relationClassName to AR to allow different relation classes

... for different dbms
fixed conflicting property declaration
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
Using only arrays in rules instead comma-separated string
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
Fix rules generator