Snooze feature, curl, and consolidation (#200)

* Snooze feature, curl, and consolidation

* Added snooze feature to delay notifications

* Added configurable default curl arguments

* Consolidated and standardized notify template update notifications

* Added curl error handling

* Snooze comment fix

* Grep, curl args, and variable init adjustments

* Modified grep commands to make use of word boundaries in order to avoid matching on substrings

* Set CurlRetryDelay, CurlRetryCount, and CurlConnectTimeout as individual variables

* Used :- for variable initialization where assignment is redundant

* Update dockcheck.sh change notes and fix variable collision

* Remove unnecessary cat and clarify readme

* reformatting

---------

Co-authored-by: Matthew Oleksowicz <matt@everyoneneeds.it>
Co-authored-by: mag37 <robin.ivehult@gmail.com>

notify_templates/notify_pushover.sh

@@ -1,5 +1,5 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_PUSHOVER_VERSION="v0.2"
+NOTIFY_PUSHOVER_VERSION="v0.3"
 #
 # Required receiving services must already be set up.
 # Requires jq installed and in PATH.
@@ -19,10 +19,14 @@ trigger_pushover_notification() {
   PushoverToken="${PUSHOVER_TOKEN}" # e.g. PUSHOVER_TOKEN=token-value
 
   # Sending the notification via Pushover
-  curl -sS -o /dev/null --show-error --fail -X POST \
+  curl -S -o /dev/null ${CurlArgs} -X POST \
       -F "token=$PushoverToken" \
       -F "user=$PushoverUserKey" \
       -F "title=$MessageTitle" \
       -F "message=$MessageBody" \
       $PushoverUrl
+
+  if [[ $? -gt 0 ]]; then
+    NotifyError=true
+  fi
 }