title / titleabbrev on index

[alfsb]

There a very few titles in main index of manual where title / titleabbrev presence and/or order causes inconsistent render output. See the image below:

The marked cases are:

• Preface — About this manual
• Introduction — What is PHP and what can it do?
• Command line usage — Using PHP from the command line
• FAQ — FAQ: Frequently Asked Questions
• Password Hashing — Hashing passwords safely and securely

I think the 3 last ones should have the complement removed, possibly all cases, and FAQ title reworded in something like "Frequently Asked Questions (FAQ).

[jimwins]

A goal of mine here is that we actually use the title/titleabbrev more to provide better information in the table of contents.

[alfsb]

In this case, I suggest at least removing the duplication on FAQ entry.