Improve ALE project style checking

* The project style linter now runs while you type.
* Now the scripts for checking the project require blank lines.
* Many style issues have been found and fixed.

ale_linters/terraform/tflint.vim

@@ -40,6 +40,7 @@ function! ale_linters#terraform#tflint#GetCommand(buffer) abort
     endif
 
     let l:opts = ale#Var(a:buffer, 'terraform_tflint_options')
+
     if !empty(l:opts)
         let l:cmd .= ' ' . l:opts
     endif