Removed jReddit wrappers and added some comments

-Removed jReddit wrapper AsyncTasks inside SessionManager and ported to
AsyncSubmissions.
-Added basic header comments
Clean up unused resources + comment display

-Comment depth indicators took up too much space and therefore has been
shrunk.
-Comment depth indicators now have fixed color rather than random ones
that caused some visual confusion.
-Fixed bug where viewing comments allows the right side panel to
operate.
icon and action bar color change
code cleanup
merge