/**
* From a list of multiple blocks, find the most exact and strongest Block.
+ *
* The logic for finding the "best" block is:
* - Blocks that match the block's target IP are preferred over ones in a range
* - Hardblocks are chosen over softblocks that prevent account creation
* - Other softblocks are chosen over autoblocks
* - If there are multiple exact or range blocks at the same level, the one chosen
* is random
+ * This should be used when $blocks where retrieved from the user's IP address
+ * and $ipChain is populated from the same IP address information.
*
- * @param array $blocks Array of blocks
+ * @param array $blocks Array of Block objects
* @param array $ipChain List of IPs (strings). This is used to determine how "close"
* a block is to the server, and if a block matches exactly, or is in a range.
* The order is furthest from the server to nearest e.g., (Browser, proxy1, proxy2,