Drupal 7.x

We have a relatively new drupal installation setup. We've been prototyping some content on it and have a few views we've invested in developing. We've been adding a number of modules and a few themes. We started with the zen theme and didn't like it so we switch to omega. We have many modules installed. Here is a quick copy past of the modules folder 'ls' result.

ANNAI, a Drupal development agency headquartered in Japan, is looking for web developers currently living in, or wishing to live in Japan. ANNAI has been working with various CMS since the early 2000s, and and specialized in Drupal since 2007. ANNAI works with government agencies, universities, and Japanese industry. At ANNAI, we are careful in the choice of our projects, to ensure that our projects are not only profitable, but also entertaining in the challenges of the build.

How to view who and when a module was installed/activated  or uninstalled ?

I'm using this post to add search functionality to my DrupalGap app: http://docs.drupalgap.org/7/Services/Search_Services 

However, I cannot find search_node or search_user under admin/structure/services/list/drupalgap/resources to check the retrieve box and whenever I try running a search after inserting the search block in the home page, I get the following error: "Failed to load resource: the server responded with a status of 404 (Not found : Could not find resource search_node.)"

Slideshow now stacks images instead of sliding.  Versions installed are the following:

Views Slideshow (views_slideshow) 7.x-3.9

Views Slideshow: Cycle (views_slideshow_cycle) 7.x-3.9

Hello,

I`ve  just installed Drush 8 with the method recommended on the official website ( drush.phar ):

• http://docs.drush.org/en/8.x/install/

Last time I installed drush I used composer and for that method I could add the php.ini values into the drush.ini, now I do not understand how to pass custom php values: for example in my php.ini   exec() has been disabled for security reasons , I`d like to permanently enable exec() only for Drush:

In the instructions i can see: