Fix tests

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/base/gl_variables.scss

@@ -136,7 +136,7 @@ $kbd-bg:                      #333;
 //== Buttons
 //
 //##
-$btn-default-color:              #7f8fa4;
+$btn-default-color:              $gl-text-color;
 $btn-default-bg:                 #fff;
 $btn-default-border:             #e7e9ed;

app/helpers/diff_helper.rb

@@ -137,7 +137,7 @@ module DiffHelper
     # Always use HTML to handle case where JSON diff rendered this button
     params_copy.delete(:format)
-    link_to url_for(params_copy), id: "commit-diff-viewtype", class: (params[:view] != 'parallel' ? 'btn btn-sm active' : 'btn btn-sm') do
+    link_to url_for(params_copy), id: "inline-diff-btn", class: (params[:view] != 'parallel' ? 'btn btn-sm active' : 'btn btn-sm') do
       'Inline'
     end
   end
@@ -148,7 +148,7 @@ module DiffHelper
     # Always use HTML to handle case where JSON diff rendered this button
     params_copy.delete(:format)
-    link_to url_for(params_copy), id: "commit-diff-viewtype", class: (params[:view] == 'parallel' ? 'btn active btn-sm' : 'btn btn-sm') do
+    link_to url_for(params_copy), id: "parallel-diff-btn", class: (params[:view] == 'parallel' ? 'btn active btn-sm' : 'btn btn-sm') do
       'Side-by-side'
     end
   end

features/steps/project/merge_requests.rb

@@ -225,13 +225,13 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
   step 'I click link "Hide inline discussion" of the second file' do
     page.within '.files [id^=diff]:nth-child(2)' do
-      find('.js-toggle-diff-comments').click
+      find('.js-toggle-diff-comments').trigger('click')
     end
   end
   step 'I click link "Show inline discussion" of the second file' do
     page.within '.files [id^=diff]:nth-child(2)' do
-      find('.js-toggle-diff-comments').click
+      find('.js-toggle-diff-comments').trigger('click')
     end
   end

features/steps/shared/diff_note.rb

@@ -198,7 +198,7 @@ module SharedDiffNote
   end
   step 'I click side-by-side diff button' do
-    click_link "Side-by-side"
+    find('#parallel-diff-btn').trigger('click')
   end
   step 'I see side-by-side diff button' do