[Issue #74][WIP] removed redundant new lines from the file
[Issue #74][WIP] updated the routes for linking S01 by S12
[Issue #74][WIP] updated views and controllers for linking S01 with S12
[Issue #74][MC] integrated story with other theme stories and resolved merge conflicts
[Issue #74][SD] added UML sequence diagram for keyword search
[Issue #74][Updating] adjusted code conventions in keyword model