Position trashcan properly in the non-MSM function editor

# Staging (before)

![image](https://cloud.githubusercontent.com/assets/206973/5496011/d4111a0e-86b7-11e4-94da-a065e5828d01.png)

# Development (regression)

![image](https://cloud.githubusercontent.com/assets/206973/5495998/ac233a72-86b7-11e4-9660-a2fc568eacfe.png)

# This PR (after)

![image](https://cloud.githubusercontent.com/assets/206973/5495989/8e8cfbb0-86b7-11e4-852c-10d7bcb4e6d4.png)