4192270ef3
1. Changed hasEffect() override since we were overriding a deprecated version. 2. Fixed a bug where we checked if a block could be edited before deciding whether to change the Y coordinate of the rift to be placed. Sometimes we would place the rift in a different block. This is the result of sticking in support for special blocks like grass and snow without considering the impact on surrounding code. It also contradicted comments that specifically said special blocks were ignored... 3. Cleaned up the code for checking for special blocks. 4. Fixed a bug in loading NBT data. There were no null checks on orientation data. If a Rift Signature or Stabilized Rift Signature had been created in a version of DD before orientations were set up, then it cause an exception when so much as looked at in later versions of DD. 5. Partially implemented free redirects for Stabilized Rift Signatures. The check to determine if a redirect is being done is missing.