events.models: Localize hardcoded strings
leaflets.models: Localize hardcoded strings
posts.models: Localize hardcoded strings
problems.models: Localize hardcoded strings
profiles.models: Localize hardcoded strings
schools.models: Localize hardcoded strings
urls: Localize hardcoded strings
base.templates: Localize hardcoded strings
competitions.templates: Localize hardcoded strings
events.templates: Localize hardcoded strings
leaflets.templates: Localize hardcoded strings
posts.templates: Localize hardcoded strings
profiles.templates: Localize hardcoded strings
translations: Add slovak language initial translation