[Mb vs MiB] Values in GUI should be consistent with REST set/get & Statistics

I ran the following in REST:

Change RAM Bucket size: 1200 MB

curl -X POST -u <user>:<password> -d ramQuotaMB=1200 -d authType=none -d proxyPort=11216 http://localhost:8091/pools/default/buckets/default

• In the UI, we see 1.17 GB. (Picture attached)
• In the REST call, we see "ram": 1258291200 (1.25 GB)
• In the cbstats call, we see ep_max_size = 1258291200 (1.25 GB)

We should get a consistent behaviour on all the channels. (fixing UI is one track)