Fix: Adding a pilot as killboard owner by external ID

Fix for adding a pilot as new killboard owner by external ID. If an
integer is entered, the killboard tries to determine whether it was given
an internal or an external pilot ID. External pilot IDs used to be above
100.000.000 before the change to 64bit IDs. Since that, external ID have
been between 90.000.000 and 98.000.000.
Thix fix changes the lower threshold for external IDs from 100.000.000 to
90.000.000.
Fix: SQL error when adding killboard owners in some environments

Fixed a bug that caused an SQL error when trying to add new killboard
owners in the admin section. This only happens in environments where the
SQL server throws a specific warning as error.
Fixed the code that caused the warning/error in the first place.
Fix: Adding corps/alliances as owners by external ID

Same fix as for pilots: Fixed the check for correct ID range for external
ID of corporations and alliances when adding a new killboard owner by
external IDs.
Corporation IDs have to be above 98 million, alliance IDs above 99 million
since the 64bit change (see
http://forums.eveonline.com/default.aspx?g=posts&m=716708#post716708).
Also fixed adding new owners by name for names starting with numbers. This
was regarded as ID and unsuccessful.

Thanks for the fix to Bubalubs.