A wrapper around mustache template rendering.

Provides some useful utilities.

Auditors: markcc
HtmlReporter fixes.
Merge branch 'master' into new_reporting
Add newlines at the end of some files.
Merge branch 'master' into new_reporting

Conflicts:
	src/python/twitter/common/fs/__init__.py
	src/python/twitter/common/java/bin/java_inspect.py