Improvement: Eml_Parser Analyzer & Template

[arnydo]

Made small changes to how headers are parsed, storing in a dict rather than list.
Updated long template to better display the headers.

[arnydo]

Finding some reports are not wrapping the text in the html table when the content is longer. Is there a pre-configured style than can be used to correct this? I was able to have it wrap the text by adding the following to the table element.

style="table-layout: fixed;word-wrap: break-word;"

<table class="table table-striped table-bordered" style="table-layout: fixed;word-wrap: break-word;">

Without additional style:

With additional style:

[nadouani]

Reviewed this PR, thanks @arnydo