base functionality handling

This version introduces multiple enhancements:

allow to user log in, log out and verification
added some basic templates
added some scripts and styles

Details of additions/deletions below:
--------------------------------------------------------------

Added:      public/assets/css/base.css
            -- Added --
                additional styles

Added:      public/assets/css/bootstrap-dark.css
            -- Added --
                bootstrap dark version

Added:      public/assets/js/jquery-2.1.1.min.js
            -- Added --
                jQuery v2.1.1

Added:      app/views/view/footer.blade.php
            -- Added --
                base footer

Added:      app/views/view/header.blade.php
            -- Added --
                base header, with message blocks

Added:      app/views/view/account_header.blade.php
            -- Added --
                user account menu

Added:      users.sql
            -- Added --
                user table structure

Added:      public/assets/js/base.js
            -- Added --
                basic scripts (element autoclose)

Added:      app/views/login.blade.php
            -- Added --
                login form template

Modified:   app/routes.php
            -- Updated --
                routers list

Modified:   app/controllers/BaseController.php
            -- Added --
                indexAction check that user is logged in and redirect to correct page
                loginAction show up login form
                authenticateAction try to authenticate user
                userAccountAction show up user page
                logoutAction log out user

Modified:   app/views/account.blade.php
            -- Added --
                template content

Modified:   app/models/User.php
            -- Added --
                $primaryKey varaibla with user id column name

Modified:   README.md
            -- Added --
                some project description

Modified:   public/assets/css/bootstrap.css
            -- Updated --
                fixed icons urls

Modified:   public/assets/css/bootstrap.min.css
            -- Updated --
                fixed icons urls

Removed:    app/views/hello.php
Removed:    app/controllers/HomeController.php