pgAdmin 4 commit: Add support for casts.

Add support for casts.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=f466e0169a9544f8b2354b4dd13031b91c99d381
Author: Sanket Mehta <sanket.mehta@enterprisedb.com>

Modified Files
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.../servers/databases/casts/__init__.py            | 643 +++++++++++++++++++++
.../servers/databases/casts/static/img/cast.png    | Bin 0 -> 426 bytes
.../databases/casts/static/img/coll-cast.png       | Bin 0 -> 402 bytes
.../databases/casts/templates/cast/js/casts.js     | 302 ++++++++++
.../casts/templates/cast/sql/9.1_plus/create.sql   |  20 +
.../casts/templates/cast/sql/9.1_plus/delete.sql   |  14 +
.../templates/cast/sql/9.1_plus/functions.sql      |  17 +
.../cast/sql/9.1_plus/getsrcandtrgttype.sql        |  46 ++
.../templates/cast/sql/9.1_plus/properties.sql     |  61 ++
.../casts/templates/cast/sql/9.1_plus/sql.sql      |  44 ++
.../casts/templates/cast/sql/9.1_plus/update.sql   |   6 +
11 files changed, 1153 insertions(+)