Add: feedback form survey submit mousedown bind

Ensighten tag rule 77219 in the MSCOM account. This code is for the
feedback survey in Download Center (DLC).
Wrapped emid call in an if value not empty string

The EMID was getting called even if empty string. Would be worth looking
at for other query string parameters as well. If an EMID query string
exists without a value, no attribution can be made.
Added remaining code snippets from Tag Manager

I copied the code out of the sections from Adobe Tag Manager. The names
of the files match the names of the sections in ATM.