Visual tweaks and fixes from sprint 2

opentech/apply/funds/tables.py

opentech/apply/projects/forms.py

opentech/apply/projects/models.py

...emplates/application_projects/includes/funding_block.html

...lates/application_projects/includes/payment_requests.html

.../templates/application_projects/project_admin_detail.html

...ojects/templates/application_projects/project_detail.html

opentech/apply/projects/views.py

...src/src/sass/apply/components/_all-submissions-table.scss

.../static_src/src/sass/apply/components/_funding-block.scss

.../static_src/src/sass/apply/components/_invoice-block.scss

.../static_src/src/sass/apply/components/_payment-block.scss