Hotfix 1.1.1

[h2]Changes:[/h2]
When you lose on a map, you now receive 50% of the essence you gained.
Upgrading the skill tree gives up to 21% more essence.
For every 3rd wave victory, you receive 19% more essence.

[h2]Fixes:[/h2]
Fixed an issue with the essence received when returning from the shop via portal.