Log Message:
www/ruby-capybara: update to 2.18.0

#Version 2.18.0
Release date: 2018-02-12

### Fixed

* Firefox/geckodriver setting of contenteditable childs contents
* Ignore Selenium::WebDriver::Error::SessionNotCreatedError when quitting driver \ 
[Tim Connor]

### Removed

* Headless chrome modal JS injection that is no longer needed for Chrome \ 
64+/chromedriver 2.35+

# Version 2.17.0
Release date: 2018-01-02

### Added

* `have_all_of_selectors`, `have_none_of_selectors` RSpec matchers for parity \ 
with minitest assertions [Thomas Walpole]

### Fixed

* Allow xpath 3.x gem [Thomas Walpole]
* Issue when drivers returned nil for `current_path` and a matcher was used with \ 
a Regexp [Thomas Walpole]
* Error message when visible element not found, but non-visible was [Andy Klimczak]

# Version 2.16.1
Release date: 2017-11-20

### Fixed

* Fix rack_test driver for rack_test 0.7.1/0.8.0 [Thomas Walpole]
* `accept_prompt` response text can contain quotes when using selenium with \ 
headless chrome [Thomas Walpole]

# Version 2.16.0
Release date: 2017-11-13

### Added

* Attempt to move element into view when selenium doesn't correctly do it - See \ 
PR #1917 [Thomas Walpole]
* `current_path` matchers will now autodetect path vs url based on string to be \ 
matched. Deprecates
  `:only_path` in favor of `:ignore_query` option [Thomas Walpole]
* Session#evaluate_async_script [Thomas Walpole]

### Fixed

* Default prompt value when using headless Chrome works correctly [Thomas Walpole]
* Support new modal error returned by selenium-webdriver 3.7 for W3C drivers \ 
[Thomas Walpole]
* Calling `respond_to?` on the object passed to `Capybara.configure` block - \ 
Issue #1935

# Version 2.15.4
Release date: 2017-10-07

### Fixed
*  Visiting an absolute URL shouldn't overwrite the port when no server or \ 
always_include_port=false - Issue #1921

# Version 2.15.3
Release date: 2017-10-03

### Fixed
*  Visiting '/' when Capybara.app_host has a trailing '/' - Issue #1918 [Thomas \ 
Walpole]

# Version 2.15.2
Release date: 2017-10-02

### Fixed

*  Include within scope description in element not found/ambiguous errors \ 
[Thomas Walpole]
*  Raise error when no activation block is passed to modal methods if using \ 
headless chrome [Thomas Walpole]
*  Don't retry element access when inspecting [Ivan Neverov]
*  Don't override a specified port (even if it is default port) in visited url \ 
[Thomas Walpole]