Basic scraping and processing to show professor contact info

This does not take in to account names like "Eddie Dupont" which we currently won't match. A future PR will implement a feature to make the connection between Eddie and Edward. Also note this only shows the info on the prof page, and not the course pages they may be mentioned on. Though that could be added to this PR if you guys want. 

![basic_prof_contact_info](https://cloud.githubusercontent.com/assets/2644780/3592935/687fbce4-0c7a-11e4-8407-4b30c55291c8.png)



Rather than directly fetching the page and doing text matching for the `pre` tag, I'd recommend sending the fetched page through a HTML parser like [BeautifulSoup](http://www.crummy.com/software/BeautifulSoup/).

Then you can match for the `pre` tag using XPath selectors, which provide a way for matching elements in a XML document (remember that HTML is a type of XML document). This will make matching the relevant content more flexible if the HTML page changes in the future such that text matching becomes too complicated. If you want to learn more about XPath selectors, I'd suggest playing around with the chrome extension [XPath Helper](https://chrome.google.com/webstore/detail/xpath-helper/hgimnogjllphhhkhlmebbmlgjoejdpjl) which will give you the XPath selector for matching elements on a HTML page as you hover over them. However, I've provided code that should work below, so you can just use that if you don't have time to look into XPath selectors.

Sending it through a BeautifulSoup will also make your regexes below much simpler, since it provides functionality to strip the `<b>` and `<i>` tags you are currently matching for in your regexes.

We actually already use BeautifulSoup elsewhere in `crawler.py`. See [here]() for an example.

The relevant code for accomplishing the above (BeautifulSoup parsing and getting the lines) should look something like this:
```
html_tree = html_parse(PROF_CONTACT_INFO_URL)
elem = html_tree.xpath('.//pre')
lines = elem.text_content().splitlines()
```