* videotools: removed more 'set -e'
  * videotools: removed TMP_DIR and 'set -e' references
  * videotools: more updates for miniade 0.2.7
  * videotools: made compatible with miniade 0.2.7
  * videotools/find-mp4-with-subtitles: added
  * videotools/video-thumbnailer: added
  * videotools/diff-subtitles-ignoring-timestamps: addes simple diff wrapper
  * videotools/combine-avi-and-srt-into-mkv: improvements
  * videotools: created module