Mission planner

[yashdeep97]

Contains the following changes:

• Add vehicle name to windows and allow user to close child windows. Partial fix for [UI] Add ways to collect all windows spawn by a particular parent  #14.
• Allow user to click on the missionPt in the map to highlight the missionPt in the mission panel.
• Allow user to change mission type and change mission type specific properties. Partial fix for [UI] Add mission planner #13.