Titles correction, all site button correction, lang fix

Finished
[#285] - Some fixes on contests' views
Merge pull request #199 from gotar/286-Titles-check-and-fix

Titles correction, all site button correction, lang fix
Merge pull request #197 from gotar/285-fix-button-alignment-on-contests-index

[#285] - Some fixes on contests' views
Btn-group center align all index pages
Merge pull request #200 from gotar/Text-align-btn-group-fix

Btn-group center align all index pages
Refactor payment index for new layout

[#248]
Merge pull request #198 from gotar/284-payment-index-view

Refactor payment index for new layout
[#275]modify new contest view

[#275]delete font-awesome

[#275]delete font-awesome from aplication.css.scss

[#275]add icon to delete competitor

[#275]changed padding