Fix rewrite_base

rewrite_base was broken because it uses -%> instead of %> so it
generated RewriteBase and RewriteCond on a single line. It's also
removed from the vhost since RewriteBase is only valid in a <Directory>
context.
make default mods configurable

...in a backwards-compatible manner.

Right now there are two options, either to enable a rather broad batch
of modules that someone found to be a good default set, or to leave them
unmanaged all-together.

This patch provides the users wtih the ability to manage their set of
default modules, by passing it as array to default_mods.

This fixes #298

n.b.: we've added test cases here, but they aren't yet part of the
actual test spec, because I have no idea how to do that.
Fix a2mod ruby19 bug

Strings are not enumerable in ruby19. This commit splits the
string into lines first.
Add build status png to README
remove servername_real

previously, if you did this:
apache::vhost { 'foo.example.com':
    docroot => '/var/www/foo',
}

puppet would error, saying you need to specify servername and/or ip
and/or port.

but why?

just default to $name, as $servername_real was already sorta doing, but
it wasn't being fully utilized.

this commit gets rid of $servername_real and just makes $servername
default to $name if it's not specified, which is what I would expect it
to do anyways!
Fix stdlib requirements
Merge pull request #316 from blkperl/update_readme

Add build status png
Merge pull request #311 from hunner/fix_file_line

Fix stdlib requirements
Add WSGIPythonHome param to apache::mod::wsgi
Merge pull request #320 from kitchen/feature/servername_real

remove servername_real
Merge pull request #318 from blkperl/add_python_home

Add WSGIPythonHome param to apache::mod::wsgi
Add WSGI params to apache::vhost

 - WSGIDaemonProcess
 - WSGIProcessGroup
 - WSGIScriptAlias
Merge pull request #315 from blkperl/ruby19_fix

Fix a2mod ruby19 bug
Merge pull request #319 from blkperl/vhost_wsgi

Add WSGI params to apache::vhost
Merge pull request #307 from oxilion/remove-rewrite_base

Fix rewrite_base
Merge pull request #314 from igalic/default_modules

make default mods configurable