How can one filter MULTIPLE processes in Activity Monitor?

model is required to build tempdb. W/o tempdb the server cannot start. Your best action is to move back model to where the engine expects it. Applying TF 3608 (do not recover any database except master) would not help in this situation.

A workaround on how to start the engine in a similar case (Eg. corrupted model) is given at Why does restoring a database needs TempDB?. Alonso uses TF 3609 (Do not recreate tempdb, try to recover it as is) to start up the engine even when model is not present, but it requires tempdb from previous successful run to be in a recoverable state.

There is no interface to SSL authentication (either server-client or client-server) from JavaScript. It is all dealt with by the browser UI.

On IE, you may be able to use the CertEnroll (previously XEnroll) ActiveX control as a way to get a newly-generated key into the user's keystore; otherwise you would just have to require them to install the certificate themselves.

Either way, when a request is made that requires the client cert - be it AJAX or normal web page access - the browser is repsonsible for using the cert (which may involve popping up a dialogue for the user to pick which cert they want).