v0.1.861

Pre-release of RIDE 2.0

Changelog:
run "npm i" if node_modules doesn't exist
upgraded dependencies to latest versions
don't send messages to interpreter after an error
if initial spawning fails, display the error
print "IDE" instead of "an IDE" in log
rm forgotten "return" in the loop that does setAlwaysOnTop
double-clicking in editor does ED
init.coffee should use D.wins instead of wins
zoom should work in floating windows, too
simplified build scripts a little
tidied up whitespace in package.json
fixed initial theme selection in menu
added tooltip "Lines on scroll bar show match locations"
made "Editors on Top" an option
refactored Preferences dialogue
moved demo mode under Tools
Mac: removed ".." component from executable path
uppercased "editorHTML" to indicate it's a constant
fixed build
made scroll annotations not step on scroll buttons
don't show completion box unless focus is there
made language bar work in search
don't autocomplete on the first line in an editor
an attempt to fix floating window positions
refactored init-nw.coffee
don't override font-size in themes
got rid of $DYALOG_IDE_USE_ORIGINAL_ERROR_PAGE
replaced empty title with "Dyalog"
don't explode curly braces in session
centred animated line in "Connecting" popup
show a dialogue with animation while connecting