Added extended MODS cleanup XSL

The new XSL removes empty MODS elements with attributes in addition to
empty elements without attributes.
Do a pre-transform of MODS, so single mods:mods document embedded in a
mods:modsCollection, will be evaluated as we require by the LOC mods2dc
transform ie. it will be in oai:dc rather than srw_dc:dc.
Add newlines at end of a couple files.
Merge pull request #3 from adam-vessey/7.x-INT-121

Add newlines at end of a couple files.
Merge pull request #123 from dwilcox/7.x-xsl-cleanup

Added extended MODS cleanup XSL
Merge pull request #136 from nigelgbanks/7.x-INT-121

Do a pre-transform of MODS, so single mods:mods document embedded in a
README Normalization
Update FAQ per @mjordan's request on Islandora list
Merge pull request #138 from ruebot/7.x

README Normalization