sprint 40 - czech language

updated
Update strings.js

Translation FIND_MENU and CMD_FIND_IN_SELECTED
Update Getting Started (How to change the project, why?)
Wordsmithing (@njx)
Use XML highlighting for .xaml files
Merge pull request #8070 from fengdi/patch-1

Update zh-cn/strings.js
Merge pull request #8333 from le717/xaml-highlight

Use XML highlighting for .xaml files
Merge pull request #8060 from kvarel/patch-18

sprint 40 - czech language
Merge pull request #7708 from SAPlayer/getting-started-update

Update Getting Started (How to change the project and why?)
updating 'Last translated' SHA to reflect last pull request