Description Bug when Approving an Allocation Request

[aestoltm]

Fixes #433 : Fixed description not displaying when setting value before clicking 'Approve' for an allocation request. Also Fixes #470

Tested fix:

1. Approved allocation without any information to ensure that start_date and end_date are automatically applied
2. Approved allocation without any information to ensure that start_date and end_date are automatically applied along with description text
3. Approved allocation with custom start_date and end_date along with description text
4. Approved allocation with custom start_date or end_date along with description text (should have start_date and end_date automatically applied in this case)

[dsajdak]

This solves the issue of the text being wiped out when hitting the approve button but the bug is also there when clicking the 'deny' button. Interestingly, your testing brings up another issue. There is no way to set a custom start and/or end date when clicking the 'approve' button. If dates are entered in either or both of those boxes, they're wiped out and replaced by start date of today and end date of one year from today. We should have logic built in that sets the dates like that only if dates are not already selected. If there's a start date entered and no end date, the end date should be set one year from the start date (or whatever is set in the coldfront.env config file). This should be a separate git issue though so I will create that (see: #470). However, the issue with the text in the description box being wiped out when clicking the deny button should be fixed as part of this PR, please.

[dsajdak]

Just one minor change requested on this - button got changed to green, I think accidentally. The functionality works as desired though.

[dsajdak]

changing this to btn-success changed the color of the button from red to green

[dsajdak]

LGTM!