[DS-1751] Some edited English message texts
[DS-1751] Can't use <i18n:text> inside <xsl:attribute> but adding another attribute "attr" magically fixes it.
[DS-1751] Small adjustments of punctuation and word order.
Merge pull request #385 from mwoodiupui/DS-1751

[DS-1751] Request a copy of the document page has 'Mensaje:' (should be message?)