Economy, gambling, waifu and so on features for YAGDPDB

To use:

1. Add "github.com/evacfk/yageconomy" to the bottom of the imports in yags cmd/yagpdb/main.go
2. Add "yageconomy.RegisterPlugin()" at the bottom of all the other "RegisterPlugin()" calls in yags main.go

If using docker, you need to make a couple changes to the docker file:

1. Add RUN go get -d -v github.com/jonas747/yageconomy under all the other git clone ... near the top
2. Uncomment the COPY statement for dev usage to apply the local changes we've made to the main.go file
3. Copy the webserver files to the proper dir by putting COPY --from=builder /go/src/github.com/jonas747/yageconomy/assets/*.html templates/plugins/ under # Handle templates for plugins automatically

You should also make sure you're not using a prebuilt image by using the docker-compose.dev file instead of the standard one.

After those changes it should look like this:

FROM golang:stretch as builder

WORKDIR $GOPATH/src

RUN git clone -b yagpdb https://github.com/jonas747/discordgo github.com/jonas747/discordgo \
  && git clone -b dgofork https://github.com/jonas747/dutil github.com/jonas747/dutil \
  && git clone -b dgofork https://github.com/jonas747/dshardmanager github.com/jonas747/dshardmanager \
  && git clone -b dgofork https://github.com/jonas747/dcmd github.com/jonas747/dcmd

RUN go get -d -v github.com/jonas747/yageconomy

RUN go get -d -v \
  github.com/jonas747/yagpdb/cmd/yagpdb

# Uncomment during development
COPY . github.com/jonas747/yagpdb

# Disable CGO_ENABLED to force a totally static compile.
RUN CGO_ENABLED=0 GOOS=linux go install -v \
  github.com/jonas747/yagpdb/cmd/yagpdb


FROM alpine:latest

WORKDIR /app
VOLUME /app/soundboard \
  /app/cert
EXPOSE 80 443

# We need the X.509 certificates for client TLS to work.
RUN apk --no-cache add ca-certificates

# Add ffmpeg for soundboard support
RUN apk --no-cache add ffmpeg

# Handle templates for plugins automatically
COPY --from=builder /go/src/github.com/jonas747/yagpdb/*/assets/*.html templates/plugins/
COPY --from=builder /go/src/github.com/jonas747/yageconomy/assets/*.html templates/plugins/

COPY --from=builder /go/src/github.com/jonas747/yagpdb/cmd/yagpdb/templates templates/
COPY --from=builder /go/src/github.com/jonas747/yagpdb/cmd/yagpdb/posts posts/
COPY --from=builder /go/src/github.com/jonas747/yagpdb/cmd/yagpdb/static static/

COPY --from=builder /go/bin/yagpdb .

# add extra flags here when running YAGPDB
# Set "-exthttps=true" if using a TLS-enabled proxy such as
# jrcs/letsencrypt-nginx-proxy-companion
# Set "-https=false" do disable https
ENV extra_flags ""

# `exec` allows us to receive shutdown signals.
CMD exec /app/yagpdb -all -pa $extra_flags