add authorization support to mongo collector
Merge pull request #388 from jkrauska/master

MongoDB - Authorization
use SIGKILL instead of default signal
add alias support (alias@host:port) to hosts list - similar to memcache collector
Merge pull request #389 from huoxy/use-SIGKILL-when-stop-diamond-in-gentoo-initd-script

use SIGKILL instead of default signal in gentoo init.d script
Merge pull request #390 from jkrauska/master

Add Alias Support to mongodb collector
sanitize Haproxy metric names. Closes #370
cpu: log error when necessary psutil module could not be imported

refs #355
diskspace: log error when necessary psutil module could not be imported

refs #355
diskusage: log error when necessary psutil module could not be imported

refs #355
memory: log error when necessary psutil module could not be imported

refs #355
network: log error when necessary psutil module could not be imported

refs #355
processresources: log error when necessary psutil module could not be imported

closes #355
Added docs about for server memory works. Closes #353
Merge pull request #393 from josegonzalez/issue-353

Added docs about for server memory works. Closes #353
Merge pull request #392 from josegonzalez/issue-355

log error when necessary psutil module could not be imported.
Merge pull request #391 from josegonzalez/issue-370

sanitize Haproxy metric names. Closes #370
PEP8 fixes
Doc updates