Plugins link on account management now always takes you to plugins.

Previously, navigating to a specific plugin added the p= parameter
which caused only that plugin to load in the plugins section,
and not the plugin list.  This loads the list and active plugin
and adds javascript to allow opening that section as needed.

Updated Controller Test to expect body and installed_plugins to
both exist.
Don't merge in plugin post details menu when it doesn't exist.

Prevents warnings from being occassionally being generated when merging post
detail menu array details together.
The test turns off debug and turns on E_WARNING to prevent the message from
being hidden.  (Which in actual running, it is not on occasion.)
Test also verifies that plugins are added to the menu.

references issue #1756
Check for links from 2 days ago midnight untl an hour ago in LinkPrompt insight.

strtotime('midnight today') was generating a time at 00:00:00 on the
current day which would exclude many recent tweets and cause a confusing
insight to be generated.
Merge pull request #1758 from cdmoyer/1756-warnings-in-sidebar-menu

Don't merge in plugin post details menu when it doesn't exist. Closes #1756
Merge pull request #1759 from cdmoyer/1620-Link-Prompt-generating-nudge-for-real-recent-posts

Check for links from 2 days ago midnight untl an hour ago in LinkPrompt Insight closes #1620
Merge pull request #1748 from cdmoyer/1486-dangling-p-in-plugin-nav

Plugins link on account management now always takes you to plugins. Closes #1486