fix FictionBook2 mime type

Change-Id: I921f33c2c712da5b542a40bfe4db1fba0f034e3f
download fb2 files too

Change-Id: I0a18ad70620cfd4263ffd3bc1423e00205e98f9b
fix mime type for PalmDoc

Change-Id: I3d1b24edd0165068efb31a34817ed9631fc05ec5
add some new mimetypes

Change-Id: Ia349d73eb30cf73a9bfbf70c95005bf74d70143c