commented unused scripts
minor changes
modified template according to display mid size images and to display the image slider for image and video collections
overlay added for displaying options for building collections as homogeneous or heterogeneous
ajax loading image removed on load of theme hierarchy
get_node() imaplemented to retrive the node from an objectId
conditions added in select_drawer() to select homogeneous and heterogeneous elements in drawer on selection basis
convert_mid_size_image() function modified to convert mid size image according to the size of image
queries modified to populate heterogeneous elements in left drawer in collection builder
script added to convert images into mid size images and thumbnails
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into collection_save
Merge pull request #920 from AvadootNachankar/mongokit

Task API added in Course Announcement & Group dashboard implementation (Initial phase)
Merge pull request #922 from sunnychaudhari/collection_save

Image & Video collection player imaplemented using orbit image slider
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into collection_save
added 'libfreetype6-dev zlib1g-dev' libraries in install file for identifying and processing images
minor changes, removed 'pillow' & added '-I Pillow'
Merge pull request #923 from sunnychaudhari/collection_save

Updated INSTALL file