search vc: add under top and bottom bars extend edges
search vc: cosmetic changes
search vc: set navigation bar translucent to handle search display
search vc: add table view + table view cell to storyboard
search vc: add database and topic references
topic vc: set topic and database on search segue call
search vc: implement getter for commands array
search vc: implement initial table view and search results table view
search vc: implement search engine [1]

must to be rethought, the current engine is a simple contains string
check
search vc: implement prepare for segue on selecting command [1]

[1] to push the right command doc view controller
topic vc: cosmetic change
search vc: add an empty table view footer
cosmetic changes

rename all segue
rename all cell identifier

with right and  names

change order to import headers and calling methods
search vc: force search bar to be active (UI&UX choice)