Work in progress

*a lot of cleanup work
missed a file..
bugged
Working in progress
fixed and polish highscoreHandler

Highscore should work properly now
Merge remote-tracking branch 'origin/develop_spawning_system' into develop
Work in progress
harder escapingship
Resets game at defeat and win

You go to highscore after entering highscore
go to highscorelist and resets game
Added backgroundimages

Also added descriptions to each level.
Modified BossShip

now spawns smaller ships, new shiptype added for those spawns
Addded costs for weapons and fixed buttons
Merge remote-tracking branch 'origin/develop_boss' into develop
added cost for weapons
Created user manual
fixed escaping ship and Uranus

Uranus is 200 points and enemies on uranus gives 0 points.
Added death animation
fixed Uranus
fixed bug

made sure to resetcosts for weapons upgrade when you started a new game