Make wording in the application consistent

In many cases, the wording and descriptions refer to words/behaviour specific to computer science. This needs to be altered

• Interest list - behavior depends on whether students are allowed to create groups or preferences and the group size, explanation should to
• Context sensitive words, use catch-all term where possible (proposal), or context-sensitive.
• Other text needs to be updated

Make helper methods: first check for @course_edition then @project then load from programme, then use "Project"