Install helps docs as part of onboarding process

Our own docs are installed as sample data!

Refactored search reindexing code.

model/onboard/model.go

@@ -0,0 +1,39 @@
+// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
+//
+// This software (Documize Community Edition) is licensed under
+// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
+//
+// You can operate outside the AGPL restrictions by purchasing
+// Documize Enterprise Edition and obtaining a commercial license
+// by contacting <sales@documize.com>.
+//
+// https://documize.com
+
+// Package onboarding handles the setup of sample data for a new Documize instance.
+package onboard
+
+import (
+	"github.com/documize/community/domain"
+	"github.com/documize/community/model/attachment"
+	"github.com/documize/community/model/category"
+	"github.com/documize/community/model/doc"
+	"github.com/documize/community/model/label"
+	"github.com/documize/community/model/link"
+	"github.com/documize/community/model/page"
+	"github.com/documize/community/model/space"
+)
+
+// SampleData holds initial welcome data used during installation process.
+type SampleData struct {
+	LoadFailure        bool // signals any data load failure
+	Context            domain.RequestContext
+	Category           []category.Category
+	CategoryMember     []category.Member
+	Document           []doc.Document
+	DocumentAttachment []attachment.Attachment
+	DocumentLink       []link.Link
+	Section            []page.Page
+	SectionMeta        []page.Meta
+	Space              []space.Space
+	SpaceLabel         []label.Label
+}