Added option to configuration screen for measurement units.  #83
Forgot to update installer with new config option. #83
Found the missing code in devices.php that was causing the wattage to be set to 0 on creation.  Had been working fine on updates.

Fixes #156
Added in checks for the mUnits configuration parameter in the data center dashboard and display pages, and will flip between English/Metric units based upon the value.

Fixes #83
Reset the $amps and $watts variable at the top of each iteration in the loop for UpdateStats in the PowerDistribution class.  When a device timed out, the values from the last polled device that returned a result were being saved for the ones offline.

Fixes #158
Updated the install.php file for the new version.

Updated the CHANGELOG to reflect issues fixed in this release.
Updating all translation files
Added in child device copy sub-routine.  Need to discuss if we want to allow for a chassis to be clone with all of the child devices before this issue is closed. #160
Duh huh forgot to change return values back to true and false #160
It looks silly but it should fix the problem and I am not seeing any other problems coming up from it.  close #159
Error suppression for a divide by zero error
Bumped version number to 2.1 in create.sql close #162
Chassis devices will clone their children now.  It's getting all pod people up in here. close #160
es_ES and gl_ES translated
es_ES and gl_ES language files updated
Added an active lookup for the image selection to the configuration screen. I could not find any problems with the current method of buildling the list of files just a slight issue of when it was built that could be confusing. If this is a genuine problem then I might need to do the same treatment to the file lookup code for the datacenters as well.  close #163
Update for group membership handling for departments. Needs more testing. #165
Updated the version in the database creation file.
Correction to an ID field in the installer that was keeping the correct value from being set on the tooltips
Adding in Italian translation files from Delpiano Dario