Merge branch 'feature-encyclopedia' into 'devel'

...ssets/text/screen/encyclopedia/encyclopedia_cs.properties

...ssets/text/screen/encyclopedia/encyclopedia_de.properties

...ssets/text/screen/encyclopedia/encyclopedia_sk.properties

core/assets/common/screen/encyclopedia/gfx/bookmark.9.png

core/assets/common/screen/encyclopedia/gfx/bookmark.png

.../nic/tablexia/screen/encyclopedia/EncyclopediaScreen.java

...c/tablexia/screen/encyclopedia/content/model/Content.java

...ic/tablexia/screen/encyclopedia/content/model/Header.java

.../nic/tablexia/screen/encyclopedia/content/model/Hint.java

...lexia/screen/encyclopedia/content/model/ImageContent.java

...blexia/screen/encyclopedia/content/model/TextContent.java

.../cz/nic/tablexia/screen/encyclopedia/menu/MenuWidget.java