Add --> Sign into (#2240)

Author: elharo

plugins/com.google.cloud.tools.eclipse.appengine.deploy.ui/src/com/google/cloud/tools/eclipse/appengine/deploy/ui/messages.properties

@@ -11,7 +11,7 @@ deploy.preferences.dialog.title.flexible=Deploy to App Engine Flexible
 deploy.preferences.dialog.title.withProject=Deployment Parameters for "{0}"
 deploy.preferences.dialog.label.selectAccount=Account:
 deploy.preferences.dialog.label.app.yaml=app.yaml:
-deploy.preferences.dialog.accountSelector.login=<Add a new account...>
+deploy.preferences.dialog.accountSelector.login=<Sign into another account...>
 deploy.preferences.dialog.browse=Browse
 deploy.preferences.dialog.flex.pricing=There is no free quota for the App Engine flexible \
  environment. Visit <a href="https://cloud.google.com/appengine/pricing">GCP Pricing</a> for \

plugins/com.google.cloud.tools.eclipse.dataflow.ui/src/com/google/cloud/tools/eclipse/dataflow/ui/preferences/RunOptionsDefaultsComponent.java

@@ -115,7 +115,7 @@ public RunOptionsDefaultsComponent(Composite target, int columns, MessageTarget
 
     Label accountLabel = new Label(target, SWT.NULL);
     accountLabel.setText("&Account:");
-    accountSelector = new AccountSelector(target, loginService, "Add a new account...");
+    accountSelector = new AccountSelector(target, loginService, "Sign into another account...");
 
     Label projectInputLabel = new Label(target, SWT.NULL);
     projectInput = new Text(target, SWT.SINGLE | SWT.BORDER);