init: MenuManager
improved: indentation of header files
moved: defined constants from `constants.h` to localized headers
update: initFileStream
update: initFileStream; successful file open
Merge branch 'formatting_and_documentation'
Done & Working:
    (1) prompts && opens file
    (2) reads && parses fields from input file
    (3) (nearly) correct Website fields
        //FIXME: Url returns two random characters after correct value
    (4) prints menu && receives user's menu option
        //NOTE: menu value should be decremented by 1 before use

FIXME:
    (A) incorrect value: function `websitePrintFull`
    (B) incorrect value: // refer to #3 above

TODO:
    (1) create function: saving output
    (2) test: backup file opening session && discarding backup file
Merge pull request #6 from imgonkim/master

Application Test