allow HTTP_X_FORWARDED_HOST to be a list
Merge remote-tracking branch 'mapproxy/master'
fixed .kml docs for caches with origin nw
add MockServ.reset method to support multiple tests with same requests
use casing from WMTS restful_template for dimension identifiers in capabilities
avoid unneeded BBOX transformations
add new parts section to the configuration

allows to put config snippets in the .yaml (for use with YAML references)
without getting any warnings
do not try to read from lockfile after exception

might have caused errors on NFS shares (see #65)
read result was not used anyways
Fix typo in configuration.rst
Add to docs about mapfile requrements

The mapfile used must support WMS requests or you'll get back a bunch of ``msWMSDispatch(): WMS server error. WMS request not enabled. Check wms/ows_enable_request settings.`` errors
Merge pull request #66 from pnorman/patch-2

Fix typo in configuration.rst
Merge pull request #67 from pnorman/patch-3

Add to docs about mapfile requrements
document --system-site-packages option of virtualenv
Merge branch 'master' of github.com:mapproxy/mapproxy
raise ConfigurationError for unknonw grid base
add workaround for travis build errors