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Merge branch 'master' of https://github.com/pixl8/Preside-CMS
Merge branch 'develop'
OP-182 Service to manage auto discovering configuration categories for the system config section
OP-182 refactoring the way in which config categories are auto discovered

Now based on i18n files in a conventional folder. No individual preside objects will be used as we will store all configuration values in a single db table
OP-182 Method to retrieve details of an individual configuration category
OP-162 Ability to save system config settings to the database
OP-182 using a better name for the saveConfig() method, saveSetting()
OP-182 Implementing getSetting()
OP-182 Refactoring data layer expected columns - do not use Preside Object 'label' field to represent the setting name - have 'setting' instead and do not have a label field at all