[PATCH 0/3] gitweb: Incremental blame series

This series is meant to replace the top 4 commits of 'jn/gitweb-blame' topic branch, those dealing with AJAX-y blame.

* jn/gitweb-blame:
      gitweb: Create links leading to 'blame_incremental' using JavaScript
      gitweb: Incremental blame (proof of concept)
      gitweb: Add optional "time to generate page" info in footer
      gitweb: Add -partial_query option to href() subroutine

      gitweb: Use light/dark for class names also in 'blame' view
      gitweb: Add author initials in 'blame' view, a la "git gui blame"
      gitweb: Mark commits with no "previous" in 'blame' view
      gitweb: Use "previous" header of git-blame -p in 'blame' view
      gitweb: Mark boundary commits in 'blame' view
      gitweb: Make .error style generic

The commit adding -partial_query option to href() is no longer necessary, and was removed from this improved series.

This version at last doesn't turn off application/xhtml+xml as content type in gitweb, because blame.js no longer uses innerHTML (and I can debug it in my web browser). Major changes are to second patch in the series.

Table of contents:
==================
 [PATCH/RFC 1/3]   gitweb: Add optional "time to generate page" info
                   in footer
 [PATCHv3/RFC 2/3] gitweb: Incremental blame (proof of concept)
 [PATCHv2/RFC 3/3] gitweb: Create links leading to 'blame_incremental'
                   using JavaScript

Diffstat: =========

 Makefile           |    6 +-
 git-instaweb.sh    |    7 +
 gitweb/blame.js    |  731 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 gitweb/gitweb.css  |   16 ++
 gitweb/gitweb.perl |  321 +++++++++++++++++------
 5 files changed, 994 insertions(+), 87 deletions(-)
 create mode 100644 gitweb/blame.js