(core) move client code to core

Summary:
This moves all client code to core, and makes minimal fix-ups to
get grist and grist-core to compile correctly.  The client works
in core, but I'm leaving clean-up around the build and bundles to
follow-up.

Test Plan: existing tests pass; server-dev bundle looks sane

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2627

app/client/components/DocConfigTab.js

@@ -0,0 +1,34 @@
+var dispose = require('../lib/dispose');
+var dom = require('../lib/dom');
+var ValidationPanel = require('./ValidationPanel');
+
+/**
+ * Document level configuration settings.
+ * @param {Object}    options.gristDoc   A reference to the GristDoc object
+ * @param {Function}  docName            A knockout observable containing a String
+ */
+function DocConfigTab(options, docName) {
+  this.gristDoc = options.gristDoc;
+
+  // Panel to configure validation rules.
+  this.validationPanel = this.autoDispose(ValidationPanel.create({gristDoc: this.gristDoc}));
+
+  this.autoDispose(
+    this.gristDoc.addOptionsTab(
+      'Validate Data',
+      dom('span.glyphicon.glyphicon-check'),
+      this.buildValidationsConfigDomObj(),
+      { 'shortLabel': 'Valid' }
+    )
+  );
+}
+dispose.makeDisposable(DocConfigTab);
+
+DocConfigTab.prototype.buildValidationsConfigDomObj = function() {
+  return [{
+    'buildDom': this.validationPanel.buildDom.bind(this.validationPanel),
+    'keywords': ['document', 'validations', 'rules', 'validate']
+  }];
+};
+
+module.exports = DocConfigTab;