Drawer-widget compatibility issue resolved with RelationType widgets used in MIS GApp


**1. views/methods.py**

  - ```get_drawers()``` modified
    - Special check added for handling "RelationType" widget's data
    - Processing required for pagination is handled in this function only
    - Work related to pagination is avoided for "RelationType" widget
    - Returned parameter's modified:
      - If RelationType widget found, then only drawers' data is returned
      - Else, pagination data is also returned along with drawers' data

**2. templatetags/ndf_tags.py**

  - ```edit_drawer_widget()``` modified
    - New functional parameters added: *page_no*, **kwargs
    - Special check added for handling "RelationType" widget's data

**3. templates/ndf/drawer_widget.html**

  - Don't apply pagination & ajax-based search to RelationType widgets used in MIS Gapp
  - Passing a context variable **is_RT** that holds value as **RelationType** if used in MIS GApp. Otherwise, it doesn't holds any value; which helps in distinguishing between the two scenarios.
  - Right button's click modified that makes an ajax-call (for saving selected elements from left drawer at the time of passing them to right drawer)
    - Now if *is_RT* doesn't holds any value then only such call is made
  - Bind event for search input box modified that makes an ajax-call to search given text (when search-text's length is > 2)
    - Now if *is_RT* doesn't holds any value then only such call is made

**4. templates/ndf/html_field_widget.html**

  - Call to ```edit_drawer_widget``` template tag modified
    - Passing parameters using python positional arguments
    - Passing very first argument's value as *RelationType*; indicating here we are dealing with RelationType widget
    - Passing left drawer's content via *left_drawer_content*

**5. views/ajax_views.py**

  - print statements removed
  - Call to ```get_drawers()``` function modified accordingly and Pagination processing content commented in following functions:
    - ```drawer_widget()```
    - ```select_drawer()```
    - ```search_drawer()```
  - ```get_anncourses_allstudents()``` modified:
    - Call to ```edit_drawer_widget``` template tag modified
      - Passing parameters using python positional arguments
      - Passing very first argument's value as *RelationType*; indicating here we are dealing with RelationType widget
      - Passing left drawer's content via *left_drawer_content*

**6. templates/ndf/student_list.html**

  - Due to removal of *Action* dropdown, need to find a new position for **Enroll in Courses** option
  
**7. templates/ndf/student_enroll.html**

  - *script* & *document_ready* block tags implemented based on latest changes made in ```base.html```