Carry over category balances according to carryOver column
Had to fix how BudgetCategories are created

They were not being populated on the Budget page when a new Budget was created.
When an account is off-budget, starting balances don't count towards income.
Removing swp files
Only including on-budget accounts for calculation of Available to Budget
Changed the Available to Budget formula.

The formula is now:
Available to Budget
    = Not Budgeted Last Month
    - Overspent Last Month
    + Income This Month
    - Budgeted This Month
Fixed heading of budget page to reflect new formula.
Added accesskeys to the navigation menu.
Allow transactions to be submitted by ajax for quicker entry

Also allowed for dynamic adding of categories.
Removed .swp file
Now alerts when transaction is created