EDSC-3067: Fix 508 compliance 'Empty form label' findings

[mreese84]

Please review Contribution.md before contributing to this project.

Description

Path	Finding	Location	Element
/projects	Empty form label	Under email address box	<label class="form-label col-form-label col-sm-4 text-right">
/projects	Empty form label	Under spatial subsetting (optional) box header	<label class="form-label col-form-label col-sm-4 text-right">
/projects	Empty form label	Under 'Click to enable' button under spatial subsetting	<label class="form-label col-form-label col-sm-4 text-right">
/projects	Empty form label	Under 'Band Subsetting' box header	<label class="form-label col-form-label col-sm-4 text-right">

Files

Acceptance Criteria

Fix 'Empty form label' for all findings to be 508 compliant.