Breadcumbs are useful not only in the TREE and BLOB action, but also in COMMITS/BRIEFS and BLOB. prodded by stsp@

ok tracey@

While here pad line numbers with spaces instead of zeroes to match the blob view.

ok tracey@

positive feedback from Kyle Ackerman ok/tweak tracey@

while here clean up some *_header id not used / not needed.

ok tracey@

proc.c really shines when there's a network of different types of processes, potentially with a various number of instances each, that needs to exchange messages. Gotwebd instead has a much simpler design, and using proc.c causes more overhead (/headaches) than it solves. So, this attempts to provide the same functionalities but with a much simpler implementation that fits gotwebd better. ok stsp@

fixes an unused variable that should have been dropped in previous commit too. ok stsp@

When browsing the history of a file, the more button should generate a link containing the file= parameter, otherwise we switch back to the 'global' history. Spotted by stsp@

First round of polishing, css simplification and responsiveness for gotwebd. The new HTML is now actually usable on text-only browsers and the fonts are bigger on smaller screens; close to no changes for "normal" desktop usage. A few regressions were spotted by Lucas on IRC, thanks! No objections from stsp@