pgAdmin III commit: Update docs for the restore/backup dialogs.

Update docs for the restore/backup dialogs.

Branch
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REL-1_22_0_PATCHES

Details
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http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=ba1cede91930c6b342a71499f1abfba801ba00dc
Author: Susan Douglas <susan.douglas@enterprisedb.com>

Modified Files
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docs/en_US/backup.rst           | 121 ++++++++++++++++++++++++++++++++++------
docs/en_US/images/backup-2.png  | Bin 16264 -> 22315 bytes
docs/en_US/images/backup-3.png  | Bin 14350 -> 24421 bytes
docs/en_US/images/backup-4.png  | Bin 15333 -> 25131 bytes
docs/en_US/images/backup-5.png  | Bin 0 -> 29985 bytes
docs/en_US/images/backup.png    | Bin 13710 -> 21025 bytes
docs/en_US/images/restore-2.png | Bin 14229 -> 20595 bytes
docs/en_US/images/restore-3.png | Bin 13461 -> 22787 bytes
docs/en_US/images/restore-4.png | Bin 25683 -> 20372 bytes
docs/en_US/images/restore-5.png | Bin 0 -> 30123 bytes
docs/en_US/images/restore.png   | Bin 13248 -> 19279 bytes
docs/en_US/restore.rst          | 112 +++++++++++++++++++++++++++----------
12 files changed, 188 insertions(+), 45 deletions(-)