NEWS: add unsorted recent entries. I think that's all of them.

This list includes the changes made between 1.9.0 and the 1.9.2 darcs
release. There are also lots of non-user-visible changes, but NEWS
doesn't need to include them.
Include allmydata/web/static/css/*.css files in install.

Signed-off-by: David-Sarah Hopwood <david-sarah@jacaranda.org>
NEWS: merge in most items
NEWS: merge in the rest
Fix URL links to source docs at github
NEWS.rst: security improvements and other minor updates.

Signed-off-by: Daira Hopwood <david-sarah@jacaranda.org>
docs/man/tahoe.1: fix typo and copyright date.

Signed-off-by: Daira Hopwood <david-sarah@jacaranda.org>
relnotes: soften compatibility claims until we have test infrastructure for them

Closes #1773
edit for clarity
convergence secret doc by CtB, marlowe, zooko