Issue Summary

Support Bamboo Data Center 12.x for "Build Times for Bamboo" app

Steps to Reproduce

1. Install or upgrade to Bamboo Data Center 12.x. 2.
2. Attempt to install the latest available release (v1.1.35) of "Build Times for Bamboo" from the Atlassian Marketplace
3. Observe that the app cannot be installed or officially supported on Bamboo 12.x. 

Expected Results

An updated version of the "Build Times for Bamboo" app is published with official compatibility for Bamboo Data Center 12.x (or the build times visualization is integrated natively into Bamboo Data Center).

Actual Results 

1. The latest version on the Marketplace (v1.1.35) only supports up to Bamboo 11.0.8. Consequently, when attempting to use it on Bamboo 12.x: 
   • UI installation fails with "Signature check failed!" as no signed Data Center version exists on Marketplace. 
   • When installed manually on disk, Bamboo reports the app as incompatible 

Workaround

Required, if there is no workaround please state:
Currently there is no known workaround for this behavior. A workaround will be added here when available