added scroll to icons in tests

test-browser/commands/scrollAndClick.js

+const EventEmitter = require('events')
+
+class ScrollAndClick extends EventEmitter {
+  command (target) {
+    this.api
+    .scrollInto(target)
+    .click(target)
+    .perform(() => {
+      this.emit('complete')
+    })
+    return this
+  }
+}
+
+module.exports = ScrollAndClick

test-browser/commands/scrollInto.js

@@ -14,7 +14,7 @@ class ScrollInto extends EventEmitter {
 
 function _scrollInto (browser, target, cb) {
   browser.execute(function (target) {
-    document.querySelector(target).scrollIntoView()
+    document.querySelector(target).scrollIntoView(({block: 'center'}))
   }, [target], function () {
     cb()
   })

test-browser/helpers/init.js

@@ -14,16 +14,18 @@ module.exports = function (browser, callback) {
 }
 
 function initModules (browser, callback) {
-  browser.pause(3000).click('#icon-panel div[plugin="pluginManager"]')
-  .execute(function () {
-    document.querySelector('div[id="pluginManager"]').scrollTop = document.querySelector('div[id="pluginManager"]').scrollHeight
-  }, [], function () {
-    browser.click('#pluginManager article[id="remixPluginManagerListItem_solidity"] button')
+  browser.pause(3000)
+    .click('#icon-panel div[plugin="pluginManager"]')
+    .scrollInto('#pluginManager article[id="remixPluginManagerListItem_solidity"] button')
+    .click('#pluginManager article[id="remixPluginManagerListItem_solidity"] button')
     .pause(5000)
+    .scrollInto('#pluginManager article[id="remixPluginManagerListItem_udapp"] button')
     .click('#pluginManager article[id="remixPluginManagerListItem_udapp"] button')
+    .scrollInto('#pluginManager article[id="remixPluginManagerListItem_solidityStaticAnalysis"] button')
     .click('#pluginManager article[id="remixPluginManagerListItem_solidityStaticAnalysis"] button')
+    .scrollInto('#pluginManager article[id="remixPluginManagerListItem_debugger"] button')
     .click('#pluginManager article[id="remixPluginManagerListItem_debugger"] button')
+    .scrollInto('#icon-panel div[plugin="fileExplorers"]')
     .click('#icon-panel div[plugin="fileExplorers"]')
     .perform(() => { callback() })
-  })
 }