[mod:html,css] Modify HTML and CSS files

Modify custom.css, create-profile.html, dash-lecturer.html and
index.html files for certain UI changes. Added a signup button in to
index.html. new style rule to custom.css
[add:admin-approve.html] Add admin-approve.html file to the project

Add admin-approve.html file that includes the UI for registration
approval by the admin
[mod:admin-approve.html] Modify Approve page for the admin

Modify how approve listings are shown and add buttons for aproving and
discarding requests.
[add:admin-edit-profile.html] Add profile edit page for the admin

Add admin-edit-profile.html that is used for editing user profiles
for the admin
[add:html] Add search and view profile pages for admin

Add admin-search-profile.html and admin-view-profile.html pages to the
project, which is used to search and view profiles of users
Merge branch 'master' of https://github.com/kasunkv/MoDACA