Cleanup and minor fixes

app/Model/Base.php

@@ -2,8 +2,6 @@
 
 namespace Kanboard\Model;
 
-use Pimple\Container;
-
 /**
  * Base model class
  *

app/Model/ProjectDailyColumnStats.php

@@ -2,6 +2,8 @@
 
 namespace Kanboard\Model;
 
+use PicoDb\Database;
+
 /**
  * Project Daily Column Stats
  *
@@ -32,7 +34,7 @@ class ProjectDailyColumnStats extends Base
     {
         $status = $this->config->get('cfd_include_closed_tasks') == 1 ? array(Task::STATUS_OPEN, Task::STATUS_CLOSED) : array(Task::STATUS_OPEN);
 
-        return $this->db->transaction(function ($db) use ($project_id, $date, $status) {
+        return $this->db->transaction(function (Database $db) use ($project_id, $date, $status) {
 
             $column_ids = $db->table(Board::TABLE)->eq('project_id', $project_id)->findAllByColumn('id');
 

app/Model/Subtask.php

@@ -352,8 +352,6 @@ class Subtask extends Base
     /**
      * Change the status of subtask
      *
-     * Todo -> In progress -> Done -> Todo -> etc...
-     *
      * @access public
      * @param  integer  $subtask_id
      * @return bool

app/Model/User.php

@@ -2,6 +2,7 @@
 
 namespace Kanboard\Model;
 
+use PicoDb\Database;
 use SimpleValidator\Validator;
 use SimpleValidator\Validators;
 use Kanboard\Core\Session;
@@ -335,7 +336,7 @@ class User extends Base
      */
     public function remove($user_id)
     {
-        return $this->db->transaction(function ($db) use ($user_id) {
+        return $this->db->transaction(function (Database $db) use ($user_id) {
 
             // All assigned tasks are now unassigned (no foreign key)
             if (! $db->table(Task::TABLE)->eq('owner_id', $user_id)->update(array('owner_id' => 0))) {

app/Model/UserSession.php

@@ -2,8 +2,6 @@
 
 namespace Kanboard\Model;
 
-use Kanboard\Core\Translator;
-
 /**
  * User Session
  *