prevent tab-triggers for snippets when in phpdoc scope

[aurora]

Currently tab-triggers for snippets are active in phpdoc, too, with the affect that snippets are inserted in documentation blocks, where you normally don't want to have them, for example:

class test {
    /**
     * ...
     * @param array[tab-trigger]
     */
    function test($arg) {
    }
}

expands to:

class test {
    /**
     * ...
     * @param $arrayName = array('' => , );
     */
    function test($arg) {
    }
}

My commit changes scope to "source.php - comment.block.documentation.phpdoc.php".

I was not sure, if i should really add it to all snippets or just for things like "array". I decided to apply the change to almost all relevant snippets, to stay consistent.

[aurora]

I think i have to withdraw this pull-request because i just noticed, that changing the tab-trigger scope isn't a good solution for this, because the html tab-triggers are still active ... so, i have to look for a better solution on this - imo - problem.