HPCC-9487 ESP should set IE=edge for certain ECLIDE HTTP responses

For certain content, ECLIDE need ESP to set the HTTP header
X-UA-Compatible to "IE=edge" and add <!DOCTYPE html> to the content.

This triggers the IE activex plugin to render in the proper content
mode.

Signed-off-by: Anthony Fishbeck <Anthony.Fishbeck@lexisnexis.com>
HPCC-9487 ESP should set IE=edge for certain ECLIDE HTTP responses

Move code affecting content buffer out of shared routine to make sure
anyone making changes in the future is explicitly aware of any
content buffer manipulation made for the ECLIDE.

Signed-off-by: Anthony Fishbeck <Anthony.Fishbeck@lexisnexis.com>
Merge pull request #4526 from afishbeck/ideUserAgentSpecialResponse9487

HPCC-9487 ESP should set IE=edge for certain ECLIDE HTTP responses

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>