`site: example.com` doesn't work from homepage search

[miketaylr]

I think these bugs already existed (and may have dupes, need to check), but they're easier to spot now w/ site: example.com feature that landed in #999.

STR)

1. open localhost:5000
2. click on search button, type site: example.com

Expected:
Taken to /issues with some example.com issues

Actual:
Taken to /issues with no results and the search input says site%3A+example.com, while the search param is q=site%253A%2Bexample.com.

So we're doing something funky with URL encoding here.

[miketaylr]

@MDTsai would you like to investigate this?

[miketaylr]

Let's add some tests for this:

https://github.com/webcompat/webcompat.com/blob/master/tests/functional/search-auth.js
https://github.com/webcompat/webcompat.com/blob/master/tests/functional/search-non-auth.js

[magsout]

@MDTsai is that ok, if I take this issue ?

[MDTsai]

@magsout sure, please take that

[magsout]

Fixed by #1518