Validate redirect URL for token response type

[PumpkinSeed]

Fix for #31 issue

[RichardKnop]

@PumpkinSeed Build failed for some reason :o

[PumpkinSeed]

@RichardKnop I will check it on the weekend. Possible I made a mistake.

[RichardKnop]

Debug log from Travis:

122.71s$ make test
bash -c 'go list ./... | grep -v vendor | xargs -n1 go test -timeout=30s'
# github.com/RichardKnop/go-oauth2-server/oauth
oauth/client.go:72: undefined: Client
oauth/service_interface.go:35: undefined: Client
# github.com/RichardKnop/go-oauth2-server/oauth
oauth/client.go:72: undefined: Client
oauth/service_interface.go:35: undefined: Client
ok  	github.com/RichardKnop/go-oauth2-server/config	0.006s
ok  	github.com/RichardKnop/go-oauth2-server/database	0.008s
?   	github.com/RichardKnop/go-oauth2-server/health	[no test files]
?   	github.com/RichardKnop/go-oauth2-server/logger	[no test files]
ok  	github.com/RichardKnop/go-oauth2-server/models	0.006s
# github.com/RichardKnop/go-oauth2-server/oauth
oauth/client.go:72: undefined: Client
oauth/service_interface.go:35: undefined: Client
FAIL	github.com/RichardKnop/go-oauth2-server/oauth [build failed]
# github.com/RichardKnop/go-oauth2-server/oauth
oauth/client.go:72: undefined: Client
oauth/service_interface.go:35: undefined: Client
ok  	github.com/RichardKnop/go-oauth2-server/oauth/roles	0.004s
?   	github.com/RichardKnop/go-oauth2-server/oauth/tokentypes	[no test files]
ok  	github.com/RichardKnop/go-oauth2-server/session	0.006s [no tests to run]
ok  	github.com/RichardKnop/go-oauth2-server/test-util	0.874s
ok  	github.com/RichardKnop/go-oauth2-server/util	0.004s
?   	github.com/RichardKnop/go-oauth2-server/util/migrations	[no test files]
ok  	github.com/RichardKnop/go-oauth2-server/util/password	0.162s
ok  	github.com/RichardKnop/go-oauth2-server/util/response	0.004s
ok  	github.com/RichardKnop/go-oauth2-server/util/routes	0.004s
# github.com/RichardKnop/go-oauth2-server/oauth
oauth/client.go:72: undefined: Client
oauth/service_interface.go:35: undefined: Client
make: *** [test] Error 123

[RichardKnop]

@PumpkinSeed OK this seems to be related to refactoring of models I did a while ago.

I have moved all models to models package so now you would use models.OauthClient instead of Client in the oauth package.