Refactor Dewar service methods and improve field handling

Updated Dewar API methods to use protected endpoints for enhanced security and consistency. Added `pgroups` handling in various frontend components and modified the LogisticsView contact field for clarity. Simplified backend router imports for better readability.

backend/main.py

@@ -7,7 +7,6 @@ from fastapi.middleware.cors import CORSMiddleware
 from app import ssl_heidi
 from app.routers import (
     proposal,
-    dewar,
     puck,
     spreadsheet,
     logistics,
@@ -137,8 +136,8 @@ def on_startup():
             load_slots_data(db)
         else:  # dev or test environments
             print(f"{environment.capitalize()} environment: Regenerating database.")
-            Base.metadata.drop_all(bind=engine)
-            Base.metadata.create_all(bind=engine)
+            # Base.metadata.drop_all(bind=engine)
+            # Base.metadata.create_all(bind=engine)
             if environment == "dev":
                 from app.database import load_sample_data
 
@@ -152,10 +151,9 @@ def on_startup():
 
 
 # Include routers with correct configuration
-app.include_router(protected_router, prefix="/protected", tags=["protected"])
+app.include_router(protected_router, prefix="/protected")
 app.include_router(auth.router, prefix="/auth", tags=["auth"])
 app.include_router(proposal.router, prefix="/proposals", tags=["proposals"])
-app.include_router(dewar.router, prefix="/dewars", tags=["dewars"])
 app.include_router(puck.router, prefix="/pucks", tags=["pucks"])
 app.include_router(spreadsheet.router, tags=["spreadsheet"])
 app.include_router(logistics.router, prefix="/logistics", tags=["logistics"])