Fix Web IDE fork modal showing no text

What does this MR do?

This MR fixes an issue where the Web IDE fork modal showed no text when the vue_file_list feature flag was enabled (which it is by default).

Screenshots

Before	After (this MR)
20200224_ide_modal_before	20200224_ide_modal_after

• Before, the md display size has uneven spacing between the Lock and Clone button.
• Before, the Web IDE button shows no text in fork modal.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #207857 (closed)