create up and down arrow for each table entry to move the entries around

[tiggersworth]

tasks:

1. create up and down arrows for each row
2. in javascript file, create up function that onclicking the up arrow, will move the row up one above.
3. in javascript file, create down function that onclicking the down arrow, will move the row down one.

[tiggersworth]

task test:

1. enter the budget website
2. enter the homepage
3. click the nav bar to the calculator page
4. enter costs in the table.
5. if a entry is wanted above or under another one, click the up and down arrows to adjust
6. entry should adjust accordingly

[kotinos]

tested.

passed.