Merge pull request #58 from kcarcia/validation

Actually making the enter key functionality work for all 3 forms on splash screen.
Open link on teacherhub downloads PDF.
Merge pull request #59 from kcarcia/pdf

Open link on teacherhub downloads PDF.
Tabs autosaving.
Merge pull request #60 from kcarcia/pdf

Tabs autosaving.
StudentLogin Arrow, validation style changes
Assignment 3.
Assignment 3
Merge pull request #62 from kcarcia/pdf

Pdf
Improved database code to be more secure
Comment line back in
Merge pull request #63 from kcarcia/pdf

Improved database code to be more secure
Validation to studentlogin.
Merge pull request #64 from kcarcia/pdf

Validation to studentlogin.
Throws focus in input fields with database validation.
Merge pull request #65 from kcarcia/pdf

Throws focus in input fields with database validation.
Fixed arrow, hopefully fixed studenthub
Tabs change color according to whether there is content.
Forgot to remove old function call.
Merge pull request #66 from kcarcia/tabs

Tabs