Edit feeding time references

[m0nggh]

Changed remaining feeding time references to feed time. Deleted some leading zeroes for test cases to remove ambiguities.

[codecov]

Codecov Report

Merging #276 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #276   +/-   ##
=========================================
  Coverage     74.76%   74.76%           
  Complexity      543      543           
=========================================
  Files            83       83           
  Lines          1577     1577           
  Branches        158      158           
=========================================
  Hits           1179     1179           
  Misses          340      340           
  Partials         58       58           

Impacted Files	Coverage Δ	Complexity Δ
.../java/seedu/zookeep/logic/commands/AddCommand.java	100.00% <ø> (ø)	8.00 <0.00> (ø)
.../model/animal/AnimalContainsKeywordsPredicate.java	70.37% <ø> (ø)	17.00 <0.00> (ø)
...in/java/seedu/zookeep/model/feedtime/FeedTime.java	84.61% <ø> (ø)	6.00 <0.00> (ø)

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