Completing my Webapp (using Codeigniter and Oracle)

Its a project that needs to be completet, i have allready got the basic stuff done. Its a Website that we use to track you developmets so called (Gaps) so its a Gaplist, which is really simple actually. I use Codeigniter and since its i'd say 50-70% done already not such a big thing. I will best attach screenshots of what i have done already since im not good at explaining.l provide you with a Oracle express dump, my codeigniter files and a Datamodel of the DB with can be edited or better said enhanced to make it all work well. I have got all the Select statements done, only have trouble with one. There really only need to be done a slick way to make the inserts possible, to add all the data and make them isert correct into the Database, you are more thatn welcome to redesign my Datamodel. And these inserts should be intergrated nicely with the Website, i dont want to have to press a sumbit button and refresh the page for every data entry, so most likely javascript is needed.