count number of I/F up to quickly check network

This is a fast way of checking if we are still up but
not the ideal solution.
Only one checker.
Clean up.
Add doc
Fix deprecation warning for mimetype keyword argument
elide commented-out code
suffix tooltip sentences with periods
Wait longer to try to reconnect.
Check if address is reachable after disconnect.
Review the handling of connection error.
Moving addClass('failed') as suggested in PR #1839
Login copyright -2014
Update copyright
Pass allow-external to pip install to allow PIL installation

With recent changes to pip 1.5, insecure external URLs need to extra flag to
be installed. This commit fixes the python_deps.sh script by setting this
flag. Alternatively, the dependency on PIL could be replaced by a dependency
on Pillow which is a maintained fork of PIL.
Revert "Pass allow-external to pip install to allow PIL installation"

This reverts commit e8d423f97acf6aa8e17489c7eb2b068909328770.
Do not install Python dependencies in a separate virtualenvironment

Since using Homebrew Python, all dependencies should be installed under
/usr/local.
Add space before URL
Replace Experimenter by User

see top annoying bug.
Update copyright and remove whitespace.
Remove tabs and whitespace.