Update plugin URLs and remove broken plugin entries

db/pkg/ansible

-https://github.com/wa/pkg-ansible
+https://github.com/pkg-gretel/pkg-ansible

db/pkg/copy

-https://github.com/wa/pkg-copy

db/pkg/direnv

-https://github.com/wa/pkg-direnv
+https://github.com/pkg-gretel/pkg-direnv

db/pkg/extract

-https://github.com/wa/pkg-extract
+https://github.com/pkg-gretel/pkg-extract

db/pkg/gi

-https://github.com/wa/pkg-gi
+https://github.com/fishery/gi

db/pkg/hub

-https://github.com/wa/pkg-hub
+https://github.com/pkg-gretel/pkg-hub

db/pkg/iex

-https://github.com/belltoy/plugin-iex.git
+https://github.com/belltoy/plugin-iex

db/pkg/keychain

-https://github.com/wa/pkg-keychain
+https://github.com/pkg-gretel/pkg-keychain

db/pkg/limap

-https://github.com/wa/pkg-limap

db/pkg/mix

-https://github.com/belltoy/plugin-mix.git
+https://github.com/belltoy/plugin-mix

db/pkg/osx_manpath

-https://github.com/wa/pkg-osx_manpath

db/pkg/peco

-https://github.com/wa/pkg-peco
+https://github.com/pkg-gretel/pkg-peco

db/pkg/pyenv

-https://github.com/wa/pkg-pyenv

db/pkg/set_color

-https://github.com/wa/pkg-set_color

db/pkg/stamp

-https://github.com/wa/pkg-stamp

db/pkg/tiny

-https://github.com/wa/pkg-tiny
+https://github.com/fishery/tiny

db/pkg/title

-https://github.com/oh-my-fish/plugin-title.git
+https://github.com/oh-my-fish/plugin-title

db/pkg/vcs

-https://github.com/oh-my-fish/plugin-vcs.git
+https://github.com/oh-my-fish/plugin-vcs

db/pkg/z

-https://github.com/oh-my-fish/pkg-z
+https://github.com/oh-my-fish/plugin-z

db/themes/flash

-https://github.com/wa/theme-flash
+https://github.com/fishery/flash

db/themes/hogan

-https://github.com/wa/theme-hogan

db/themes/hulk

-https://github.com/wa/theme-hulk
+https://github.com/fishery/hulk

db/themes/led

-https://github.com/wa/theme-led

db/themes/lolfish

-https://github.com/er0/lolfish.git
+https://github.com/er0/lolfish

db/themes/russell

-https://github.com/wa/theme-russell