Fix for duplicate plugin names.

BUG=
R=scudette@gmail.com

Review URL: https://codereview.appspot.com/177040043
Made the default session name be the base filename or "Default session" if none was provided.

BUG=
R=scudette@gmail.com

Review URL: https://codereview.appspot.com/173710043
More work on NTFS filesystem support.

BUG=

Review URL: https://codereview.appspot.com/180870043
Fixed broken tests. Disabled entity tests for now.

Review URL: https://codereview.appspot.com/180210043
Extensive changes to rendering throughout the codebase.

BUG=
R=scudette@gmail.com

Review URL: https://codereview.appspot.com/182120043
* Refactored test code.
* Added unit tests to test suite.
* Removed outdated tests and post processing.

BUG=
R=adam.sindelar@gmail.com

Review URL: https://codereview.appspot.com/181980043
Changed definitions of network components and fixed Darwin plugins.

- Network-related components split further, so that OSI components can
  be used by NetworkInterface to store addressing information.
- Darwin ifconfig replaced (it was broken).
- Rewrote socket parser on Darwin to emit new data model.

BUG=
R=amoser@google.com

Review URL: https://codereview.appspot.com/184860043