Revamped informatique crawler

New:

Classes to specify the required data for components:
-CPU
-Motherboard
-GraphicsCard
-Storage
-RAM

The classes contain a dictionary containing the required data based on
the tweakers interface.

These classes can be implemented by other crawlers, DO NOT CHANGE

Parsing methods for:
-CPU
-Motherboard
-GraphicsCard
-Storage
-RAM

Signature can be copied, take care to specify the correct find commands
for beautifulsoup.

Revamped:
-LowLevelSpider:
Now uses the label paramater to determine the type of component. Based
on the type the correct parsing method will be selected

-saveComponent(dictionary):
Creates node and relationship based on properties passed by parse
methods. Can be copied for other crawlers without changing. DO NOT
CHANGE