[GEOS-5993] Missing ElectronicMailAddress in WFS capabilities

In the WFS capabilities there were missing two important fields that are
present in the XSD. Those fields are ElectronicMailAddress and
DeliveryPoint.

This commit adds those two fields, but disregards the fact that there
can be more than one of both fields. However this patch could be adapted
to create a List or Array of both, so they are more faithful to the XSD.
[GEOS-5993] Added a test in the WFS Capabilities Transformer test for Contact information added to WFS.
[GEOS-6727] Modify KMLReflectorTest to be insensitive to the format_options order.

This is needed for JDK8, which uses a different hashing function.
[GEOS-6727] Remove format=image/png in tests that are trying for animated GIF.

This is needed for JDK8, where the hashing function changes resulted in the PNG format
being selected.
[GEOS-6727] Ensure format_options are always ordered.

This makes it easier to test consistently for JDK8.
[GEOS-6727] Fix setting of contact information over REST configuration endpoint.

This appears to be an existing bug exposed by JDK8.
[GEOS-5993] Added GUI support for DeliveryPoint and ElectronicMailAddress.
[GEOS-6712]Add charset definition in HTTP headers when returning textbased responses
Added meta tag X-UA-Compatible IE=10 to solve IE11 errors
[GEOS-6735] CSSHandler leaves file handles open
MaxFeaturesForPreview added to WFSAdminPage and MapPreview page, stored in metadata map
Merge pull request #789 from koordo/fix_ie11_wicket

GEOS-6426 Internet Explorer 11 does not work properly with admin UI
GEOS-6709 fix import transforms, add tests

The modified transforms were using the wrong argument for obtaining
the attribute to transform. This was working for JDBC Feature
implementations but not for others.
GEOS-6739: Fix typo in log message.
Merge pull request #794 from bradh/GEOS-6739

GEOS-6739: Fix typo in log message.
Make Travis build with Oracle JDK 8 too
Merge pull request #783 from bradh/jdk8

Resolve build issues on Oracle JDK8
Merge pull request #777 from ischneider/GEOS-6709

GEOS-6709 fix import transforms, add tests
Enforce that store and layer names are xml-safe at the catalog level
Update ImportProcess to match changes in Catalog API