Add a soft check when editing phase details

[nikochiko]

As part of a Google Code-In task.

Changes proposed in this pull request:

• Include a soft-check to ensure that the host does not enter: max submissions/day > max number of submissions/month > Max total submissions

• Link to live demo: http://pr-265-evalai.surge.sh

[codecov-io]

Codecov Report

Merging #265 into master will decrease coverage by 0.1%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #265      +/-   ##
==========================================
- Coverage   50.62%   50.51%   -0.11%     
==========================================
  Files          66       66              
  Lines        3761     3771      +10     
  Branches      442      444       +2     
==========================================
+ Hits         1904     1905       +1     
- Misses       1762     1771       +9     
  Partials       95       95

Impacted Files	Coverage Δ
...ephases/editphasemodal/editphasemodal.component.ts	33.76% <0%> (-5.04%)	:arrow_down:
...bliclists/challengelist/challengelist.component.ts	47.61% <0%> (+0.95%)	:arrow_up:

Impacted Files	Coverage Δ
...ephases/editphasemodal/editphasemodal.component.ts	33.76% <0%> (-5.04%)	:arrow_down:
...bliclists/challengelist/challengelist.component.ts	47.61% <0%> (+0.95%)	:arrow_up:

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[nikochiko]

@Ram81 I am facing this issue for the dev build :confused: https://github.com/Cloud-CV/EvalAI-ngx/issues/249. Can you please share if there is any other way to test the working?

(Not linking issue directly as it could create reference to the unrelated issue)