Initial version of YouTubeDL
Add resume support
Add support for testKey (LikeLines API)
Add configuration loading to LLIndexer.

Also included in this commit are the executables
that are needed for content analysis in future commits.
Have LLIndexer perform a check on loaded secret keys
Add Transcoder class (wrapper for FFmpeg process)
Skeleton for MotionActivityAnalyzer
Add post-processing to Motion Analysis
Small fixes
Add YouTubeComment download code (deep-links)
Add postMCA support in LikeLinesWebService
Return peaks in sorted order
Make serverUrl in LLWebService visible
Fix bug in deep-link downloader in case no comments available
Fix transcodeAndWait
Implement scheduling of MCA Tasks
Remove unused import
Add configuration section to README