Migrate contents to new website

[GZGavinZhao]

This mainly involves converting Jekyll templates to Hugo shortcodes, ensuring the layout remains reasonably consistent, and add more styling when needed. More detailed instructions will follow.

• Guide
  • Overview #11
  • Setup #12
  • Learning Angular #13
  • Architecture #14
  • Displaying Data #15
  • User Input #16
  • Migrate guide/forms #10
  • Migrate guide/dependency-injection #17
  • Migrate guide/template-syntax #18
• Tutorial (the classic Tour of Heroes)
  • Migrate tutorial/toh-0 #19
  • Migrate tutorial/toh-1 #20
  • Migrate tutorial/toh-2 #21
  • Migrate tutorial/toh-3 #22
  • Migrate tutorial/toh-4 #23
  • Migrate tutorial/toh-5 #24
  • Migrate tutorial/toh-6 #25
• Advanced
  • Migrate advanced/attribute-directives #26
  • Migrate advanced/component-styles #27
  • Migrate advanced/deployment #28
  • Migrate advanced/hierarichal-injectors #29
  • Migrate advanced/http-client #30
  • Migrate advanced/lifecycle-hooks #31
  • Migrate advanced/pipes #32
  • Migrate advanced/router #33
  • Migrate advanced/security #34
  • Migrate advanced/structural-directives #35
  • Migrate advanced/testing #36
• Other
  • Migrate cheatsheet #37
  • Migrate glossary #38
  • Migrate faq #39
  • Migrate tools #40
  • Migrate community #41
  • Migrate reference/videos #42
  • API Documentation (link to the corresponding AngularDart version the site is targeting) #43