Handle Bad Usernames in AnimeList, MangaList, and Profile Calls

[Michael Johnson]

MAL returns various error messages if pages are requested for a username that doesn't exist, but the return HTTP code is always 200. We need to make sure to parse the returned data for the error message and return a proper error state.

[Ratan Dhawtal]

fixed #1

→ <<cset 2cfc20f544a9>>

[Michael Johnson]

Add Error Handling for AnimeList, MangaList, and Profile

For the profile, animelist, and mangalist calls, add in some checking to see if the data returned is for a valid user. If an error is detected, set the return to an error message.

fixes #1.

→ <<cset f33be5bb12e5>>

[Ratan Dhawtal]

fixed #1

→ <<cset 2cfc20f544a9>>