Add custom states

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Custom states:

• [x] https://github.com/codeforcroatia/imamopravoznati-theme/issues/147
• [x] https://github.com/codeforcroatia/imamopravoznati-theme/issues/142
• [x] https://github.com/codeforcroatia/imamopravoznati-theme/issues/66
• [x] https://github.com/codeforcroatia/imamopravoznati-theme/issues/62
• [x] https://github.com/codeforcroatia/imamopravoznati-theme/issues/63

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Writeup (internal doc): https://docs.google.com/document/d/1dC31ycfFZ-IUBKTjmIS2eLUZpdcla3PTORT6-SLentU/edit#

Test via: https://github.com/codeforcroatia/imamopravoznati-theme/tree/0.39.0.0-custom-states

Updated ordering and descriptions:

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Deadline extended added - needs more testing

Repo/branch: https://github.com/codeforcroatia/imamopravoznati-theme/tree/0.39.0.0-custom-states

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To-do: fix css for the new custom states (icons and colors)

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CSS fixed.

Remains:

• correction requested - korisnik moze traziti ispravak odnosno nadopunu informacija

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Done all in https://github.com/codeforcroatia/imamopravoznati-theme/tree/0.39.0.0-custom-states