458052 Clean DB & Fix Bugs/ Errors On Codeigniter Website

I was told there is some junk code in the mysql database that needs to be cleaned out so it doesn't cause errors, functionality issues, or future issues. Not sure how big or small so we can talk more via PMB about this and if its more or less than the max you can adjust your bid. I've had a few programmers work on the website that did not really have PHP or codeigniter framework experience and was told some data is not needed. In addition if you have experience cleaning code in codeigniter framework provide separate quote. The three "fixes" if you will are: - resolve issue where the websites bottom tabs do not show. This only happens in Internet Explorer. Told it was a possible javascript issue. - I want comments in a section on a page to be readable only by the owner of the project not everyone else. - I also seem to get a lot of random PHP errors including the common cannot modify header information headers already sent so to see your experience I like to get your reason I am getting this error and maybe other PHP errors and let me know at least with the header error what the fix is. The programmer who can tell me the fix for this will go to the top of the list. If you just paste your portfolio or general response on my PMB I will not consider you and will remove your bid. Programmers who take the time to read and answer questions and ask questions will be contacted back. REQUIREMENTS - Must have have SOLID php codeigniter experience and know how to change css as well as code without breaking the script. - Must be able to fix items right the first time. - Must have excellent communication skills. Must be able to talk out things BEFORE doing them if you do not understand fully what I want. - Able to present potential problems or resolutions that would improve or decrease site performance. - I place 25% in escrow at start, if you require more do NOT reply. - Must sign NDA