Bug Fixes and Second Design A UI Build

FIXED: Issue where changing response probability after providing DTR
probabilities clears DTR inputs.
CHANGE: Full DTR probabilities when entering cell-specific inputs no
longer carry over when moving from cell-specific to conditional
probabilities. This fixes an issue with changing response probability
changing the full DTR success probabilities when cell-specific input is
unchecked.
NEW: Error handling for invalid power inputs
NEW: Updated UI framework for Design A based on updates to Design B.