Change order or module loading system

First choice is `init.zsh`, the script we use, introduced by Prezto.

Next choices are based on which are the most common init scripts in the
zsh-users repositories:

* `zsh-autosuggestions`, `zsh-history-substring-search` and
  `zsh-syntax-highlighting` have `${zmodule}.zsh`
* `zsh-completions` has `${zmodule}.plugin.zsh`

Latter format apparently was introduced by Oh-My-Zsh.

Leaving `${zmodule}.zsh-theme` and `${zmodule}.sh` as the last options.

init.zsh

@@ -36,10 +36,8 @@ fi
     if [[ ! -d ${zmodule_dir} ]]; then
       print "No such module \"${zmodule}\"." >&2
     else
-      for zmodule_file (${zmodule_dir}/{,zsh-}${zmodule}.zsh-theme \
-          ${zmodule_dir}/init.zsh \
-          ${zmodule_dir}/{,zsh-}${zmodule}.plugin.zsh \
-          ${zmodule_dir}/{,zsh-}${zmodule}.{z,}sh); do
+      for zmodule_file (${zmodule_dir}/init.zsh \
+          ${zmodule_dir}/{,zsh-}${zmodule}.{zsh,plugin.zsh,zsh-theme,sh}); do
         if [[ -f ${zmodule_file} ]]; then
           source ${zmodule_file}
           break

login_init.zsh

@@ -8,7 +8,7 @@
 #
 
 (
-  local dir file
+  local dir file zmodule zmodule_dir
   setopt LOCAL_OPTIONS EXTENDED_GLOB
   autoload -U zrecompile
 
@@ -24,14 +24,11 @@
   done
 
   # zcompile enabled module init scripts
-  local zmodule zmodule_dir
   for zmodule (${zmodules}); do
     zmodule_dir=${ZIM_HOME}/modules/${zmodule}
     if [[ -d ${zmodule_dir} ]]; then
-      for file (${zmodule_dir}/{,zsh-}${zmodule}.zsh-theme \
-          ${zmodule_dir}/init.zsh \
-          ${zmodule_dir}/{,zsh-}${zmodule}.plugin.zsh \
-          ${zmodule_dir}/{,zsh-}${zmodule}.{z,}sh); do
+      for file (${zmodule_dir}/init.zsh \
+          ${zmodule_dir}/{,zsh-}${zmodule}.{zsh,plugin.zsh,zsh-theme,sh}); do
         if [[ -f ${file} ]]; then
           zrecompile -pq ${file}
           break