Also added cucumber feature for hovercards

Added test case for Issue #4163

deletes ActivityStream model and all it's references

update migration with the without_protection option to disable mass assignment protection

fixes issue 4274 flash-messages stay longer

fixed app.publisher undefined error

app view removed and click event binder added in the publisher view initializer.

removed unwanted console log

attempted to fix this.el undefined error

clarify regexp and correct some bad backtracking

add specs

rewrite regex

convert mardown style title to plain text title

fix bad indentation

add jasmine test for post-viewer.js

tries to fix bad jasmine test