typo fixes [DE]
Update BUILDING.md

This was missing from a clean ubuntu build box - caused a "Project ERROR: libcrypto development package not found" error message
Merge pull request #101 from silarsis/patch-1

Add pkg-config for ubuntu build instructions
Merge pull request #95 from ghost/patch-1

Fix typos in German installer translation
Remove extra null byte from CryptoKey::torServiceID

This method is effectively unused (only in debug messages), so this
extra byte never caused any trouble.
Cache keyfiles to avoid reading from disk too often
Remove unused CryptoKey methods
Fix boolean API trap in CryptoKey::load
Add tests for RSA key handling
Merge pull request #107 from special/tweak-key-handling

Fix minor issues and add tests for key handling
Ignore test-related build artifacts