Adds overview page
Implements updating expense value
Adds current month method for overview
Adds ability to use partials
Moves expense update to partial
Adds income to Month
Adds some overview styles
Adds income form to overview
Rearranges overview page
Adds currency helper
Changes column size for tablet
Orders expenses alphabetically
Removes individual expense updating
Merge pull request #13 from arempe93/month-overview