Overhaul publicreport storage layer, create unified tables

This is a huge change. I was getting really sick of the split between
nuisance/water tables when more than half of the data they store is
common. I finally bit off the big work of switching it all.

This creates a single unified table, publicreport.report and copies the
existing report data into it. It also ports existing data from the
original tables into the new table.

Along with all of this I also overhauled the system for handling
asynchronous work to use a LISTEN/NOTIFY connection from the database
and a single cache table to avoid ever losing work.

db/dbinfo/publicreport.water_image.bob.go

@@ -1,132 +0,0 @@
-// Code generated by BobGen psql v0.42.5. DO NOT EDIT.
-// This file is meant to be re-generated in place and/or deleted at any time.
-
-package dbinfo
-
-import "github.com/aarondl/opt/null"
-
-var PublicreportWaterImages = Table[
-	publicreportWaterImageColumns,
-	publicreportWaterImageIndexes,
-	publicreportWaterImageForeignKeys,
-	publicreportWaterImageUniques,
-	publicreportWaterImageChecks,
-]{
-	Schema: "publicreport",
-	Name:   "water_image",
-	Columns: publicreportWaterImageColumns{
-		ImageID: column{
-			Name:      "image_id",
-			DBType:    "integer",
-			Default:   "",
-			Comment:   "",
-			Nullable:  false,
-			Generated: false,
-			AutoIncr:  false,
-		},
-		WaterID: column{
-			Name:      "water_id",
-			DBType:    "integer",
-			Default:   "",
-			Comment:   "",
-			Nullable:  false,
-			Generated: false,
-			AutoIncr:  false,
-		},
-	},
-	Indexes: publicreportWaterImageIndexes{
-		PoolImagePkey: index{
-			Type: "btree",
-			Name: "pool_image_pkey",
-			Columns: []indexColumn{
-				{
-					Name:         "image_id",
-					Desc:         null.FromCond(false, true),
-					IsExpression: false,
-				},
-				{
-					Name:         "water_id",
-					Desc:         null.FromCond(false, true),
-					IsExpression: false,
-				},
-			},
-			Unique:        true,
-			Comment:       "",
-			NullsFirst:    []bool{false, false},
-			NullsDistinct: false,
-			Where:         "",
-			Include:       []string{},
-		},
-	},
-	PrimaryKey: &constraint{
-		Name:    "pool_image_pkey",
-		Columns: []string{"image_id", "water_id"},
-		Comment: "",
-	},
-	ForeignKeys: publicreportWaterImageForeignKeys{
-		PublicreportWaterImagePoolImageImageIDFkey: foreignKey{
-			constraint: constraint{
-				Name:    "publicreport.water_image.pool_image_image_id_fkey",
-				Columns: []string{"image_id"},
-				Comment: "",
-			},
-			ForeignTable:   "publicreport.image",
-			ForeignColumns: []string{"id"},
-		},
-		PublicreportWaterImagePoolImagePoolIDFkey: foreignKey{
-			constraint: constraint{
-				Name:    "publicreport.water_image.pool_image_pool_id_fkey",
-				Columns: []string{"water_id"},
-				Comment: "",
-			},
-			ForeignTable:   "publicreport.water",
-			ForeignColumns: []string{"id"},
-		},
-	},
-
-	Comment: "",
-}
-
-type publicreportWaterImageColumns struct {
-	ImageID column
-	WaterID column
-}
-
-func (c publicreportWaterImageColumns) AsSlice() []column {
-	return []column{
-		c.ImageID, c.WaterID,
-	}
-}
-
-type publicreportWaterImageIndexes struct {
-	PoolImagePkey index
-}
-
-func (i publicreportWaterImageIndexes) AsSlice() []index {
-	return []index{
-		i.PoolImagePkey,
-	}
-}
-
-type publicreportWaterImageForeignKeys struct {
-	PublicreportWaterImagePoolImageImageIDFkey foreignKey
-	PublicreportWaterImagePoolImagePoolIDFkey  foreignKey
-}
-
-func (f publicreportWaterImageForeignKeys) AsSlice() []foreignKey {
-	return []foreignKey{
-		f.PublicreportWaterImagePoolImageImageIDFkey, f.PublicreportWaterImagePoolImagePoolIDFkey,
-	}
-}
-
-type publicreportWaterImageUniques struct{}
-
-func (u publicreportWaterImageUniques) AsSlice() []constraint {
-	return []constraint{}
-}
-
-type publicreportWaterImageChecks struct{}
-
-func (c publicreportWaterImageChecks) AsSlice() []check {
-	return []check{}
-}