RFE: way to disable blocking temporarily (one page load or limited time)

### Describe the issue

There is often a need for a **one-time** or **temporary** disabling of blocking, to get access to content on a page just once. The only way to do that today is to

1. disable uBlock
2. refresh the page
3. remember to re-enable uBlock after it loads.

Not only is this three steps, the last one is easy to forget.

### Steps for anyone to reproduce the issue

1. Enable the "Easy Privacy" third-party filter.
2. Go to http://www.nytimes.com/video
3. Pressing play has no effect while uBO is enabled.
4. Disabling uBO allows the video to play.

The point of this issue is not whether Easy Privacy flawed. It is this: **How to quickly and easily unblock the the video without the three-step process at the top of this issue?**

### Your settings

(I'm pretty sure my settings aren't relevant to this RFE)

##### Your filter lists

Easy Privacy

### Recommendation

uBO has the first two. I'm suggesting it supports the third. UX-wise it is consistent and not complicated.

action on uBO on/off button | enable/disable (whitelist)...
-----| -----
`click` | current site
`Ctrl`-`click` | current page
`Alt`-`click`
(or `Shift`-`click`?) | current page for 15 seconds (or until it fully loads, or whatever is most feasible).