obsolete: drop usage of changectx in '_computephasedivergentset' Changectx are expensive and not needed there. The use of `repo.set` denote old code that predate the introduction of `repo.revs` that we now use. On my mercurial repository 495 draft: before: 0.010275 second after: 0.008832 second On a mercurial repository with 115973 draft: before: 0.899255 second after: 0.397131 second

hgweb: remove unused Graph() properties Both of these were introduced in 0dba955c2636, but were already unused.

gitweb: remove unused css classes Looks like they were unused since the very introduction of gitweb theme in 385b8872b8e3.

monoblue: also highlight target line on annotate and comparison pages Clicking on a line link on pages that show any kind of file contents (including diffs) should highlight that line, and in monoblue it works when there's a <pre> element (e.g. diff), but pages that use <table> element (annotate and compare) need this css class. It matches and highlights linked (":target") table rows. This line is pretty much copied from gitweb theme.