save from python for net surgery

0. Scheme desired parameters.
1. Do surgery on the net through `net.params['name'][idx].data[...] = `.
2. Save post-operation net params by `net.save('fname')`.

Handwoven deep nets, anyone?
define fully-convolutional imagenet model
release net surgery example from #455
[docs] contact us on webpage
[fix] adding requirements.txt for web_demo. Closes #704
continuous integration of master build

check make

- all
- test
- lint

but not runtest or warn since they are not yet ported to master.
[example] standardize imagenet leveldb names
Changed path in description to point to parse_log.sh

It seems that parse_log.sh has moved from /path/to/caffe/scripts/ to /path/to/caffe/tools/extra. The edit changes the description to reflect this change. Nothing major really.
Back-merge documentation and fixes