Replace rewritten URL values contained in HTMLTAG groups with original values from MHTMLTAG groups

[seamustuohy]

The MHTMLTAG destination group is used to encapsulate an HTML tag with a rewritable URL parameter. As can be seen below this can contain an HTMLBASE control word which indicates a location of a rewritten Uniform Resource Locator (URL) inside a MHTMLTAG destination group.

This means that while the HTMLTAG group which corresponds with the MHTMLTAG in question will have the cid: or mid: values needed to URLs to the appropriate attachments in a .msg, it will not accurately recreate the original data before encapsulation.

We should do two things.

1. Replace the URL's in HTMLTAG's with the URL found in the corresponding MHTMLTAG (if there is one.)
2. Store a dictionary of all cid:'s and mid:'s that were replaced in this way mapped to the URL's they were replaced with. This should enable appropriate renaming of attachments for forensic purposes.

Example MHTMLTAG / HTMLTAG pairing.

{\*\mhtmltag340 <img style="DISPLAY: block" alt="ING" src="{\htmlbase ATT-1-top_ro%7E1.jpg}" width="580" height="6">}
{\*\htmltag340 <img style="DISPLAY: block" alt="ING" src="cid:CB04FC0F390249B88E6CEA2FF807B22D@campaign-ing.website" width="580" height="6">}\htmlrtf \objattph  \htmlrtf0