modified template shell scripts

[slycordinator]

Changed according to:

1. recommendations from shellcheck
   such as quoting variables and removing backticks

2. change test commands to use bracket notation
   test "$var" -> [ "$var" ]

3. changed if and while conditionals to have "then" on same line

if [ "$var" ]
then

to
if [ "$var" ]; then

4. tr '[0-9a-f]' '0' to tr '[:alnum:]' '0'
   This changes tr to use the alphanumeric class. This future-proofs the command in case that we later have hashes that are bigger than base-16.

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[gitgitgadget]

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CC: Revi Ewer <[email protected]>, Ill Takalook <[email protected]>

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Changes since v1:
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...

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[gitgitgadget]

Invalid author email in c16a06f: "[email protected]"

[dscho]

/allow

[gitgitgadget]

User slycordinator is now allowed to use GitGitGadget.

WARNING: slycordinator has no public email address set on GitHub;
GitGitGadget needs an email address to Cc: you on your contribution, so that you receive any feedback on the Git mailing list. Go to https://github.com/settings/profile to make your preferred email public to let GitGitGadget know which email address to use.

[slycordinator]

User slycordinator is now allowed to use GitGitGadget.

WARNING: slycordinator has no public email address set on GitHub; GitGitGadget needs an email address to Cc: you on your contribution, so that you receive any feedback on the Git mailing list. Go to https://github.com/settings/profile to make your preferred email public to let GitGitGadget know which email address to use.

My profile now has a public email set.

[dscho]

My profile now has a public email set.

@slycordinator great! Then you can test with /preview that everything works as intended, and if it does, advance to /submit.