[Issue #179] [WIP] adds project-word model
[Issue #179] [WIP] adds add_word method which adds a new word to a project
[Issue #179] [WIP] adds documentation to add_word method
[Issue #179] [WIP] adds change_synonym method that changes the synonym of a given keyword in a project
[Issue #179] [WIP] adds documentation to change_synonym method
[Issue #179] [MC] fixes merge conflicts with branch C3_fattouh92_S16_importCSV
[Issue #179] [WIP] updates methods for adding and changing keywords in a project
[Issue #179] [WIP] merges actions add_word and change_synonym
[Issue #209][WIP] Salma commited show project files
[Issue #179] [WIP] integrates work with project's show and search page
[Issue #179] [WIP] finishes adding and changes words in project functions and integrates them in views
[Issue #179] [MC] fixes merge conflicts with rolling_master
Merge pull request #252 from MGhanem/C1_khloud-khalid_C3S13_adding_words_to_project

C1 khloud khalid c3 s13 adding words to project