remove broken mkdist.sh; functionality will be restored in 1.2.1
update NEWS and VERSION for release 1.2
don't refresh display on a notebook you're deleting

fixes #1049
don't react to dragging html/images

fixes #1032: explicitly do not react to text/html

@sujitbehera27, this might interest you: we were *accidentally* disabling
the dragging of images within the page (such as the shadow edges of the cells,
or plots), which we don't want to handle as assets, or at least don't know how
to.

turns out that dt.items.length === 3 in this case, probably because it supports
multiple formats on the one file/selection.  so when we only supported dropping
one file, we were not reacting to images, but we need this fix now that we
support multiple files.

the other line enables the (+) for multiple-file drops; we weren't getting
feedback when dragging multiple files over the asset area.
appended cells go to result, inserted to source

fixes #993
not going to fight the inconsistency, just going to fix the bug
fix up bootstrap; support both online and offline mode
document bootstrapR.sh replacing mkdist.sh
rcs.system.* conf keys

introduce rcs.open and rcs.close, move stuff out of setup.R
do open, set rcs from rcs.system.*, close instead of validity check
add workspace, datafrome (rcloud.*viewer) to rcloud.conf.samp
use alternate upload icon

last one was invisible, closes #1058
update VERSION for next dev cycle
Merge branch 'develop' into release/1.2

Conflicts:
	VERSION
	scripts/bootstrapR.sh
move RCloud Sample Notebooks to top

closes #1012 again
deal with unknown user in featured users properly
also look in featured users when auto-selecting in notebook tree
Merge branch 'release/1.2' into develop
re-apply "update VERSION for next dev cycle"

lost due to bad merge