fix for issue #13
Add already loaded check to ProcessJobModule
update for the fix, remove QStyle dependency
Better error message.
Instantiate the correct type of module from module.conf.
Code style.
Add dummy process job module.
Add CalamaresAddModuleSubdirectory, a CMake function for modules that
do not require building through a CMakeLists.txt.
Merge pull request #22 from toudi/center-mainwindow-fix

fix for issue #13
Add YAML to QVariant conversion to YamlUtils
Load additional module-specific configuration into a Module object.
Make extra configuration map protected in Module.
Add setConfigurationMap to ViewStep with empty implementation.
Actual module ViewSteps can reimplement it to read their own module-
specific configuration.
Actually load the additional config map into the ViewStep.
Set initial timezone for the locale viewmodule in module.conf.
Make the locale viewmodule load the initial timezone from config.
Add calamaresstyle script
Coding style fixes
Move partitionmanager code to src/modules/partition
Let the user recreate the partition table (mbr or gpt)

Closes #20