Maximum total budget for a proposal changes from year to year

从 api/templates/pages/budget.html#L133 开始，跟踪提案表单如何获取当前的警告值。然后检查 Set Parameters 页面和往年的生产数据，以确定 stipend 和其他预算值应放在哪里。完成的标准是两个值都可配置，警告会针对多个 Faculty 分别检查这两个值，并且往年的数据仍保持已填充状态。

Faculty stipends (which is solved by PR #183) brings about another issue, which is there is a warning hard-coded into the end of the proposal form which notifies the user that their proposal is over a certain amount: https://github.com/BCStudentSoftwareDevTeam/urcpp/blob/development/api/templates/pages/budget.html#L133

This number should be dynamic, which means it needs to be programmable in the Set Parameters page.

However, the current number ($8300) was derived from a $5300 faculty stipend (now wrong) + $3000 max budget for everything else (which may also change in the future). Worse yet, this doesn't take into consideration the fact that two or more faculty could be on a proposal, which would make the budget: 5300 + 5300 + 3000.

So, this needs reworked so that faculty stipends are treated separately from the other budget calculations when this warning is displayed. In reality, it should only be a check on the $3000 budget for everything else, and a separate check on the stipend based on the number of faculty on the proposal.

Both the stipend and the "everything else budgets" should be set in the Set Parameters page so they can change each year.

You'll also want to check the impact of this on previous years (i.e., fix the production data so the value is in there).