Fix auto-selection of URL field with X11 selection

We use `focusin` event instead of `click` because when using the latter,
when the selection is created it isn't put into X11 PRIMARY selection.
And as a Linux user I'm very used to such behaviour that when something
gets selected, it's ready for pasting, which is the primary purpose of
the clone URL field.

When `focusin` is used, the selection is copied to X11 buffer
automatically, so it works as expected (tested in Firefox and Chrome).

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 7.11.0 (unreleased)
-  -
+  - Fix clone URL field and X11 Primary selection (Dmitry Medvinsky)
   -
   -
   -

app/assets/javascripts/application.js.coffee

@@ -115,8 +115,8 @@ if location.hash
 window.addEventListener "hashchange", shiftWindow
 
 $ ->
-  # Click a .one_click_select field, select the contents
-  $(".one_click_select").on 'click', -> $(@).select()
+  # Click a .js-select-on-focus field, select the contents
+  $(".js-select-on-focus").on "focusin", -> $(this).select()
 
   $('.remove-row').bind 'ajax:success', ->
     $(this).closest('li').fadeOut()

app/views/shared/_clone_panel.html.haml

@@ -15,7 +15,7 @@
       :"data-html" => "true",
       :"data-container" => "body"}
       = gitlab_config.protocol.upcase
-  = text_field_tag :project_clone, default_url_to_repo(project), class: "one_click_select form-control", readonly: true
+  = text_field_tag :project_clone, default_url_to_repo(project), class: "js-select-on-focus form-control", readonly: true
   - if project.kind_of?(Project)
     .input-group-addon
       .visibility-level-label.has_tooltip{'data-title' => "#{visibility_level_label(project.visibility_level)} project" }