Refactoring and other changes (#32, #43, #73)

[KamilZm]

Main changes:

• big refactoring
• move most of texts into localisation file
• autoscroll parts of form
• display application version in the footer ( https://github.com/HlidacStatu/Volicsky-Prukaz/issues/73 )
• new configuration file
• new validations including validation summary ( https://github.com/HlidacStatu/Volicsky-Prukaz/issues/43 )
• new databox hyperlink (in homepage and application preview/Step 2)
• new election calculator hyperlink (in homepage)
• new hyperlink to mapy.cz (in application preview/Step 2)
• more improvements (maybe)

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