[NEXUS-6799] Fix repositories Save/Discard placement
[NEXUS-6799] Forward loadRecord to inner SettingsForm
[NEXUS-6799] Stick buttons to end of form by extracting forms out of panels
Merge pull request #732 from sonatype/NEXUS-6799-form-buttons-placement-2

REVIEW: [NEXUS-6799] Fix master/detail Save/Discard buttons placement