buildbot: use ringBuffer to store last 1MB of logs

Change-Id: I689ca82c64b9c7f89913551c5138a78718377c0d
Merge "buildbot: use ringBuffer to store last 1MB of logs"
website: vars cleanup&renaming

Change-Id: Iaf3784e26d4a2fbe403f8fcafb482779c16dbe77
Merge "website: vars cleanup&renaming"
Combine search and index page functionality.

Also:

* Changed favicon to a safe
* Clean up design of toolbar
* SVG support buggy in Chrome, replace SVG checkmark icons with PNG

Screen cap:
http://vault.aaronboodman.com/share/sha1-2dbb2b515fc84f2ef1395ee263cd41c1a6700de2?via=sha1-6eb9c7651ffa8e6f4f95e8fc6800a4672c4e179a&assemble=1

Change-Id: Ic5d2eb30ea1d72022a2b8804cae887319ac32a1b
Merge "Combine search and index page functionality."
Use pushstate() to give searches URLs and history entries.

Also, remove note about bref support from search instructions since
apparently that isn't supported yet.

Change-Id: I1ccbb8be44aa62ae7191aef913c7a226fd90a775
use XDG_CACHE_HOME for cache if set

Change-Id: Id06be1e98c7b550cbb92cedd21fd852c0e158857
cammount: handle SIGINT, so that we unmount too in that case.

Change-Id: I5e82c6326aab892674c775e0615a91af71532d3c
C+A: Add Salman Aljammaz

Change-Id: I7688971fba9ced477de1430bbb236b9cc7966954
Merge "cammount: handle SIGINT, so that we unmount too in that case."
Merge "use XDG_CACHE_HOME for cache if set"
buildbot: broke into a master and a builder bot

This change is the first major step towards more improvements to the
buildbot. It cleans up various details, but most notably:
-it now uses a task as the basic data structure, to improve readability
and maintainability
-it breaks the bot into a master bot and a builder bot.
-it allows a master to receive reports from remote bots, and the
status page now aggregates all those reports.
-it allows a builder bot to send its reports to several master bots.
-the master bot uses whatever go version is installed to build the
builder bot, or the downloaded go tip if none is found.

The master bot is in charge of
1) monitoring the changes to the Camlistore and Go repos,
2) recompiling builder bot, which allows to add some new tests to the
test suite without having to interrupt the master bot.
3) starting a builder bot instance
4) waiting for the builder bot report and/or polling the builder bot
for its progress
5) answering the requests to display the various status pages.

http://camlistore.org/issue/185

Change-Id: I46a0b8fabbebf76b0c3ed04fd2ee73362d565cf7
search: start of general Query support. very rough draft.

Start of something that builds and 'works', but barely fleshed out at all.
Likely to change drastically yet.

Change-Id: I7fba25528a341ff2dbbc4dbb579f2450d7889320
Merge branch 'master' of https://camlistore.googlesource.com/camlistore