Fix issues with SQLite

[BioniCosmos]

In Plugin.php, function hasColumn and hasTable use SHOW COLUMNS and SHOW TABLES, which is not supported by SQLite. Instead, we could use:

$sql = "SELECT * FROM pragma_table_info('" . $table . "') WHERE name LIKE '%" . $field . "%'";
$sql = "SELECT name FROM sqlite_master WHERE type='table' AND name LIKE '%" . $table . "%'";