don't reset build/ if we're not using --hardcore, and some other fixes
make sure show-config works with npm (fix #1630)
Merge pull request #1632 from jlipps/master

misc fixes
remove unused testfiles
add tests for apk downloading, delete old tests (fix #1631)
Merge pull request #1636 from jlipps/master

fix #1631
adds check for API level; stops test if device is 'android' but API < 17

separates checkApiLevel functionality and cleans up little bits