Filter transactions by category

[rennerocha]

• Right now, we are showing transactions from all categories. Sometimes we want to see only data from an specific categories. Add the option for the user to select which categories they want to see the transactions.
• The categories selection could be a box in the left side, with the list of the categories, and the user will be able to select one, and filter the results automatically.
• There should be a way to deselect the selected categories, and then show everything again.