Experiments v16d,e

Latest crop of experiments. Highlights:
* New v16-derived networks, one of which (16d) won the annual CSSGEPVRC (CellScope Small Scale Gross Ear Picture Visual Recognition Challenge) 2014 competition 
* `examples/oto_imagenet/oto_imagenet_v16_feature_extractor.prototxt`: Feature extractor prototxt for v16d (there's no `d` suffix because the v16 networks all use the same network, just different solver parameters)
* `python/examine_leveldb.py`: Add option to dump images
* `tools/extra/fetch_logs.sh`: fetch remote logs
* `tools/extra/plot_training_log_dan.sh`: Run `plot_training_log.py` with some parameters that I got sick of typing in manually every time