Implement and test creating and deleting partitions in DriveSetup

[stippi]

For creating/deleting logical partitions, the Intel Extended Partition add-on needs to be checked and possibly completed. For creating any partitions, we need to consider what we mean by "partition type". At the moment, I thought type means either primary, extended or logical. But primary and logical partitions really just have a type other than a type indicating an extended partitions. Part of the way, this is how the current Partition Map add-on is written. There is lots of TODOs left in this code. More testing needs to be done too. DriveSetup itself also needs to be completed to actually call the respective Disk Device API to create/delete partitions. For creating partitions, another panel needs to be implemented which retrieves the desired size within the parent disk/partition.

[stippi]

I don't think we will recommend using DriveSetup to partition a harddrive in R1/alpha1. Therefore this ticket should not block R1/alpha1. However, DriveSetup sometimes files to initialize a partition. For example, I've seen this happen on an Eee. On my all hardware, initializing works fine, though.

[mmadia]

See #3546 for "Information regarding DriveSetup implementation"