Created getTransportDatabase function in database tools for returning transport data.

Currently transport only has `groups` and `libraries` sections.  Does not
include depository like thermo.
Fix group drawing with other versions of pydot.

Added quotation marks to number values for compatibility with 
other versions of pydot.  Hopefully this is backwards compatible.
Remove code associated with history field in the database entries.

These are no longer functional and thus superfluous.
Display library labels since database files are sometimes missing names.

Using the filename rather than the user-set name in the database file (which
is sometimes missing) is safer.
Load all depositories when loading kinetics database.
Switching thermoSearch to point to views.moleculeSearch
More changes for the transport data display module.

Added necessary urls and views. Transport database
hyperlinks now show up on database page. Displays
transport libraries and groups.  Added additional button
for searching transport on the Molecule Search Form.

Currently incomplete as transport entries for individual
molecules cannot be displayed yet.
Added Transport Search and molecule hyperlinks.

Can now display transport molecule diagrams and properties
via clicking on individual molecules. Can estimate 
transport properties via Transport Search.
Remove high charts from tranportData template as it is not being used.
Don't give any editing option for transport data since it is not yet working.
Transport does not have a libraryOrder right now.
Make molecule search description more general as we add more property search features.
Display link to transport data on a molecule's entry page.
Change 'Search Transport' to 'Search Transport Properties' Button on Search page.
Clean up of the transport modules in views.py

Removed print statements, functions related to thermo, fixed docstrings, etc.
Merge pull request #72 from jabrownmit/dev

Transport display module for the website