Resize support, fix POD error, adjustable timeouts

This commit adds support for resizing one or more Linodes to a new
plan size.

Additionally, this commit fixes a POD error for linode-linode and
supports adjustable job timeouts.

The included WebService::Linode module has been updated to version
0.15, which supports API responses that indicate success inside
the ERRORARRAY but return nothing in DATA, such as linode.resize.
Show datacenter label instead of id
additional documentation changes to readme
Fix minor documentation typo