BibAuthorID: user prefs and session fix

* The claim link was wrongly stored in user preferences.

Signed-off-by: Alessio Deiana <alessio.deiana@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>
WebSession: user preference to enable profiling

* Adds a user preference that is available if you have 'profiling' permissions.
  With this preference, you can enable permanently enable profiling for your
  user. Useful for debugging random slowness.

Signed-off-by: Alessio Deiana <alessio.deiana@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>
sequtils: increases size of seqSTORE.seq_value

* varchar(60) was still not big enough, varchar(255) is the max.

Signed-off-by: Alessio Deiana <alessio.deiana@cern.ch>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>