Install powerline without generating autoloads

and improve powerline-revert for mode line face of the custom theme
Add anzu recipe and install it
Remove lighter of globally enabled minor mode

Because property :post-init in forked undo-tree recipe was moved to the newly added init file, remove the recipe and require it in variable el-get-sources.
Move extended monokai theme for helm and helm-ls-git to newly added monokai-emacs init file
Add property :depends as variable el-get-sources in helm-ls-git recipe