Update all Habitat references to use Helix Examples

[nickwesselman]

With the new Basic Company Helix Examples going public, any Habitat references in existing docs which can be replaced with Basic Company should be removed and replaced.

Below is a quick audit of Habitat mentions. Not all can be replaced immediately due to the limited scope of Basic Company.

• [x] Layers section (2.1.2)
  • [ ] Foundation subsection (2,1,2,3) - Basic isn't deep enough in the Foundation layer
• [x] Modules section (2.1.3)
• [ ] Domain language section (2.1.4) - Maybe needs to wait for a larger example?
• [ ] Implementation structure (2.2.1) - Maybe needs to wait for a larger example?
• [x] Solution structure (2.2.2)
• [x] Projects (2.2.3)
• [x] Module structure (2.3.2)
• [x] Item types (2.4.1)
• [x] Managing items in development (2.4.2)
• [ ] Deploying items (2.4.3) - Remove existing for now, add Azure deployment to Basic later?
• [x] Template Structure (2.5.1)
• [ ] Template Types (2.5.3) - Can't replace all, maybe should wait?
• [x] References from code (2.5.4) - Also could fix #26 and #19
• [ ] Layouts and sublayouts (2.6.1) - No "sublayouts" in Basic
• [ ] Datasource Settings (2.6.3) - Too simple in Basic, will want to complete #30 first
• [ ] Rendering Params (2.6.4) - Don't think we have these in Basic yet
• [ ] Placeholders (2.6.5) - Basic doesn't really have enough
• [ ] Configuration definition scope (2.7.2) - No settings in Basic
• [ ] Managing config files (2.7.4) - Could do config patches but don't have web.config transforms in Basic, maybe wait
• [ ] Tenants (2.8.1) - No multisite in Basic
• [ ] Sites (2.8.2) - No multisite in Basic
• [ ] Enabling multi-language (2.9.1) - No languages in Basic
• [ ] Dictionary (2.9.2) - Basic uses builtin dictionary, wait until we have a custom example and feature both
• [ ] Security rights management (2.10.1) - No security roles in Basic
• [ ] Domains (2.10.2) - No custom domains in Basic
• [ ] Code formatting (2.11.1) - No editor settings or .DotSettings in Basic
• [ ] Front-end technologies (2.12.1) - no integrated front-end example yet
• [ ] HTML markup (2.12.2) - No integrated front-end yet
• [ ] CSS and Theming (2.12.3) - No integrated front-end yet
• [ ] Scripting (2.12.4) - No integrated front-end yet
• [x] Setting up local dev (3.1.1) - Change to powershell and SIF?
• [x] Local deployment (3.1.2) - Change to mention TDS and HPP
• [x] Version control (3.1.3)
• [ ] Integration (3.2.2) - Should set up something automated for Helix Examples
• [x] Managing tests (3.3.1)
• [x] Unit tests (3.3.2)
• [ ] Integration tests (3.3.3) - Maybe remove since outdated?
• [ ] Deployment strategy (3.4.1) - Remove since outdated?