Fix index range bug

[nweiyue]

• participate 0, presence 0 throws exception
• participate INDEX_OUT_OF_RANGE, presence INDEX_OUT_OF_RANGE throws exception
• participate 3-0, presence 3-0 (first number bigger than the second) throws exception

[codecov-io]

Codecov Report

Merging #138 into master will decrease coverage by 0.14%.
The diff coverage is 83.33%.

@@             Coverage Diff              @@
##             master     #138      +/-   ##
============================================
- Coverage     74.15%   74.01%   -0.15%     
+ Complexity      746      745       -1     
============================================
  Files           117      117              
  Lines          2198     2197       -1     
  Branches        229      230       +1     
============================================
- Hits           1630     1626       -4     
- Misses          506      507       +1     
- Partials         62       64       +2     

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/atas/commons/core/Messages.java	75.00% <ø> (ø)	2.00 <0.00> (ø)
...mmands/sessionlist/session/ParticipateCommand.java	85.00% <33.33%> (-9.12%)	8.00 <0.00> (ø)
.../commands/sessionlist/session/PresenceCommand.java	85.71% <33.33%> (-8.74%)	8.00 <0.00> (ø)
src/main/java/atas/logic/parser/ParserUtil.java	97.72% <100.00%> (+0.05%)	17.00 <1.00> (ø)
...va/atas/logic/parser/ParticipateCommandParser.java	100.00% <100.00%> (ø)	2.00 <1.00> (ø)
.../java/atas/logic/parser/PresenceCommandParser.java	100.00% <100.00%> (ø)	2.00 <0.00> (ø)
...rc/main/java/atas/model/attendance/IndexRange.java	95.65% <100.00%> (-1.02%)	14.00 <2.00> (-2.00)
src/main/java/atas/model/ModelManager.java	95.95% <0.00%> (+1.01%)	42.00% <0.00%> (+1.00%)

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[erisjacey]

LGTM!