Deprecate DagModelView and replace with existing DAG Details page

[abridgett]

Both the "is paused" and "scheduler lock" buttons on DAG edit (i.e. the (i) button from the homepage) fail to work for me.

I think this is due to airflow/www/views.py setting them as disabled. For "is_paused" this was done in a27d110 FYI.

For pausing the on/off button on the home screen works fine and seems to do exactly the same thing.

Doesn't fix scheduler lock, but perhaps removing is_paused (or hiding it until a better non-flickering solution is found would be a good idea. Not that I see any flickering FWIW.

[r39132]

Adding an image of the disabled controls mentioned above : Image below of the screen launched by clicking the info button on the Home Screen.

[mistercrunch]

all of this is meant to be read-only. is_paused should be interacted with in the main DAGs page, and scheduler_lock will be used by the different schedulers to not step on each other's toes.

[abridgett]

Aaaah! That'd explain it :-D Trying to figure out how to make that obvious.

Whilst you get here by clicking on "(i)" info button, the URL is /edit/ and the save/save&continue/cancel buttons could be replaced wth just "OK".

#174 you actually mention this too if I've read it correctly :-)

[mistercrunch]

Yeah we should just deprecate this page and use the DAG details page for all this.