Created BorrowRequest model and views
Modified notification model, views, and  templates
Optimized Shed borrow_count loop
Added files containing constant definitions for notification and borrow request
Created own app for borrow_requests and moved files
Completed view_requests template and modified sharecenter views and notification model

- finished view_requests template
- borrow_tool view  will now create a borrow request and notification
- modified notification model html function
Created url and view for borrow requests and fixed syntax errors
Fixed syntax for python 3.x

removed unicode escape characters
fixed syntax error with fields.py in django_messages
Added/changed related_names for foreign key fields
Added activity notification creation during tool creation/deletion
changed html function
Changed default value of action to empty string
Template display None if no request list
Created seperate urls.py file for borrow_request urls
Moved urls for apps to own file
Moved urls for user
re-added url for registration that was accidently removed
removed unneeded imports
Fixed the following  bugs in borrow_request views
- Forgot to import django.contrib message
- Used invalid syntax for field updating
- In delete_sender_request, compared recipient to user instead of sender to user
Added links to borrow_request views
added back slash at end of url