Hard-coded cpTriggerUrl

[Saboteur777]

There are a lot of parts of the code where the admin cpTriggerUrl is baked in instead of using the actual cpTriggerUrl setting, e.g.:

<form method="post" accept-charset="" action="{{ url('/admin/create') }}" >

instead of

<form method="post" accept-charset="" action="{{ cpUrl('create') }}" >

[axelhebenstreit]

this is still breaking the plugin when cpTriggerUrl is something else then admin