Add ec2_elb_lb for managing ELBs
Add health check parameter.
Add logo to docsite.
Tweak background color.
Overwrite docs CSS in layout.
Merge branch 'add_ec2_elb_lb_module' of git://github.com/jsdalton/ansible into jsdalton-add_ec2_elb_lb_module
Fix missing description key
Refactor ec2_elb_lb to use shared module snippet code
Adding suggested licenses to the ansible-galaxy meta template
Adding an "Example Playbook" section to the README template for ansible-galaxy

Fixes 5397
Micro-optimization of inventory.expand_hosts.detect_range
Micro-optimization: replace s.find(x)!=-1 with x in s

timeit shows a speedup of ~3x on Python 2.7.5 x86_64.
It also makes the code a bit shorter.
hostname module: don't filter hostnamectl with awk

There's no need to filter hostnamectl's output with awk because its man
page says:

    hostnamectl [OPTIONS...] {COMMAND}

       --static, --transient, --pretty
	   If status is used (or no explicit command is given) and one
	   of those fields is given, hostnamectl will print out just
           this selected hostname.

E.g. hostnamectl --static status => ansible.example.org