Feature/multivoting visualization

[MartaInes]

In this PR is added the frontend for the single and multioption voting.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.05%	✅ 96.30% (target: 70.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (d50e29c)	3020	2682	88.81%
Head commit (e5321c6)	3071 (+51)	2729 (+47)	88.86% (+0.05%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#58)	54	52	96.30%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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_{You may notice some variations in coverage metrics with the latest Coverage engine update. For more details, visit the documentation}

[auroranavas]

I have left a comment requesting for a change for mutiple option voting. Single option voting does work.

[auroranavas]

Both multioption and single voting work. The tests run correctly. Congrats on this feature!

[AntonioRodriguezRuiz]

Looks good to me