tidy up of mechops + added an easier way to manage operation lifecycles in activities/fragments with the new OperationManager
improved OperationManager persistence across config changes
added fromCache flag to op manager callbacks + some javadocs
Fixed issue in mechnet where POST and PUT do not have setDoOutput(true) causing it to fail requests on some devices
new build (damn I need a build server soon :P)
Merge pull request #18 from fluxtah/master

various features and fixes