[CLC-2123] Style fixes
[CLC-2123] Exposing translated block messages for my_activities
[CLC-2123] Extracting new translations into separate class, better memory usage with instantiating large hashes
[CLC-2123] More amending
Merge pull request #1284 from yuhunglin/CLC-2123

[CLC-2123] Exposing friendly block messages in my activities feed.