pgAdmin 4 commit: 1) Fixed error in alertify.pgNotifier when servercon

1) Fixed error in alertify.pgNotifier when server connection is lost.
2) Change styling of alertify.pgNotifier as we did for success, error and info.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=47cf874460dd0fcd0f39af1772e4ba3913020ee1

Modified Files
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web/pgadmin/static/js/alertify.pgadmin.defaults.js | 59 +++++++++++++---------
1 file changed, 34 insertions(+), 25 deletions(-)