#486 Allow arbitrary spaces in strings in ME's.

[Ken Monks]

At present there is no way to enter strings containing consecutive spaces when autoformatting is turned on because the auto-formatting elides any spaces after the first. Lurch should allow arbitrary strings when enclosed in quotes even when autoformatting of a bubble is turned on. Note that this is not as simple as turning off the removal of whitespace when an MEs contents are enclosed in "" because you could have an ME like
{{{

!html

[x = "Hello      World"].

[Ken Monks]

• keywords auto-formatting added; MEs removed