Yeti frontend 2.1.5

What's Changed

• Component for new DFIQ objects (YAML) with validation by @tomchop in #158
• Various UX tweaks by @tomchop in #160
• Remove trailing / causing redirect (fixes #153) by @tomchop in #159
• Nicer UX when reporting errors (fixes #162) by @tomchop in #163
• Fix needless redirect by @tomchop in #164
• New field type: option-custom by @tomchop in #165
• Add button and endpoints to delete objects by @tomchop in #166
• Add logout controls and actions by @tomchop in #168
• Export fixes by @tomchop in #169

Full Changelog: 2.1.4...2.1.5