Add database interface, pagedb.py.
Ignore Python bytecode artifacts.
Add capability to extract text, resources, and links from the captured HTML.
Merge github.com:OMGitsHongyu/ML_project

Conflicts:
	.gitignore
Use a named cursor so it doesn't try to fetch all the rows at once(!)
Handle _capture_log/_html_content being None
move dbname= handling into PageDB constructor
Add page_id field to CapturedPage.
Add basic statistics of the DOM structure.
Merge pull request #1 from zackw/master

Extract HTML, text, links, resources from the database