patch csrf filter

Signed-off-by: Ahmad Shah Hafizan Hamidin <ahmadshahhafizan@gmail.com>
Merge pull request #47 from ahmadshah/patch/csrf_filter_2.1

Patch csrf filter for store, update and destroy methods
Update changelog.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2

Signed-off-by: crynobone <crynobone@gmail.com>
Fixes merge conflict.

Signed-off-by: crynobone <crynobone@gmail.com>
Use existing filters.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2

Signed-off-by: crynobone <crynobone@gmail.com>

Conflicts:
	src/Story/Routing/Api/ContentController.php