don't mention locale for now, make env a namespace and move to namespace region, make sure env exists event in case of telemetry failure

#1835 add viewColumn property to TextEditor, not yet decided if we also need an event to signal changes

This reverts commit ac55a05b.

# Conflicts:
#	src/vs/languages/html/common/htmlTags.ts

don't use \ for glob-pattern samples but a magic unicode forward slash character that doesn't break block-comments. fixes #891.