(#1797) - fix websql compaction

Somehow #1743 introduced a regression to WebSQL
where the "compact a complicated tree" test fails.
The fix is to rephrase the query to avoid param
lists (`WHERE foo in (?,?,?)`).

Reproduced in both Safari 7 and Chrome.
(#1795) - better contrast for code colors
(#1807) - import promises once in utils
(#1810) - Remove bower
(#1734) - leveldb simultaneus write race condtions
(#1734) - leveldb doc writing race conditions