Affects these ides:
- Atmel Studio
- Code Red (I don't think we support this)
- Coide
- DS-5
- E2Studio
- EMblocks
- KDS
- Simplicity v3
- SW 4 STM32
also corrects flags usage in EMBlocks
Makes several broad changes:
- removes dead code that dealt with the online build system
- replaces export function with a much simpler one that:
- does not copy any sources
- the zip file hits the disk
- the mbed_config.h hits the disk
- the project files hit the disk
- nothing else hits the disk
- exporters use Resource object scanned with a toolchain
- progen exporters don't optionally build a project instead they have a
build function that may be called afterwards
- much of the code passes pylint (have a score of 9 or above):
- project.py
- project_api.py
- export/__init__.py
- export/exporters.py
- test/export/build_test.py