Document password truncation with BCryptPasswordHasher
Merge pull request #962 from dstufft/document-bcrypt-truncation-1.4.x

Document password truncation with BCryptPasswordHasher
[1.4.x] Bump version to no longer claim to be 1.4.5 final.
[1.4.x] Fixed #20150 -- Fixed an error in manager doc example

Backport of 485c024567 from master
[1.4.X] Fixed #18277 - Clarified startproject documentation.

Backport of 33503600b5 from master