Getting Started Documentation

[smithdc1]

Hi all - Following on from #928 here is my suggestion for item 2 on the list.

I've added a getting started page which pulls out the the two key ways crispy-forms can be used. i.e. filter and crispy tag.

This left two pages which both talked about different aspects of the helper. I've combined these into a single helper page for now and will be tackled later on in my plan. I felt leaving them as two separate pages in the interim didn't make a lot of sense.

The other small change was to add the concepts page into the TOC as we had lost this at some point.

[codecov-io]

Codecov Report

Merging #986 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #986   +/-   ##
=======================================
  Coverage   96.51%   96.51%           
=======================================
  Files          24       24           
  Lines        2729     2729           
  Branches      241      241           
=======================================
  Hits         2634     2634           
  Misses         54       54           
  Partials       41       41

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 77f4ea7...4f3b054. Read the comment docs.