Three small hotkey/placement change requests

[anon1988]

1. One hotkey to invert horizontally the tool belt.
Reason: It's more comfortable working with only the 1~5 than holding SHIFT+key.

2. One hotkey to rotate counter clockwise
Reason: Once we get the grip of it, we'll work more comfortably by not pressing 3 x "R" to place objects in a wanted orientation.

3. The entity copy settings feature, instead of clicking one by one to "paste" the settings, make possibly to apply those dragging the cursor.
Reason: Comfy and agile.

It has a low complexity to implement and doesn't affect anything for those who don't want it.

[ssilk]

1. One hotkey to invert horizontally the tool belt.
Reason: It's more comfortable working with only the 1~5 than holding SHIFT+key.

Interesting idea.

2. One hotkey to rotate counter clockwise
Reason: Once we get the grip of it, we'll work more comfortably by not pressing 3 x "R" to place objects in a wanted orientation.

This is implemented in 0.15.

3. The entity copy settings feature, instead of clicking one by one to "paste" the settings, make possibly to apply those dragging the cursor.
Reason: Comfy and agile.

Absolutely needed: Mass operations. Including modules.