Change button type to submit for all forms

[jnbn]

Problem

The “Clear” and “Clear All” buttons in the Cache Controller widget do nothing when clicked. The forms are never submitted, so no cache is cleared.

Cause

Buttons were changed to type="button" (in 45243e8). In HTML, type="button" explicitly does not submit the form. Only type="submit" (or omitting type, which defaults to submit) will submit the form when the button is clicked.

Solution

• Use type="submit" for all buttons that should submit their form: each “Clear” button and the “Clear All” button.