Standardised and fixed deprecration warning  - By Why-not-now

Fix not getting unique unit from tile based free unit trigger  - By SeventhM

By Ouaz:
- Fix Carthage civilopedia article 
- Add "UI tips" civilopedia article 

Connect roads automation  - By willjallen

By dHannasch:
- Pass-through exclude and filterUniques, respectively 
- Add TechManager.isObsolete(unit) 
- Rename BaseUnit.techsAtWhichNoLongerAvailable() 
- Fix failing tests