beaker-sync-tasks: Add /RPC2 to remote server URL

xmlrpclib.ServerProxy() doesn't add a /RPC2 to the proxy URL if it sees
that the URL is of the form: http://localhost/bkr, so we need to add
RPC2 explicitly before creating the ServerProxy object.

Bug: 1040226
Documentation for CSV Export/Import

This patch documents the CSV export/import functionality available to
administrators. It also adds a reference to the documentation from the
export and import Web UI.

Bug: 979277
Bug: 987157

Change-Id: I2784dcb9e5db65f44566e553be5dd19880ebdb22
Auto generate subcommands form bkr man page

Change-Id: I8a427552b2dc13018d8c4f3b8606123755bb6f28
Fix the docs. link on the CSV export/import page

This patch fixes the problem reported at:
https://bugzilla.redhat.com/show_bug.cgi?id=979277#c10

Bug: 979277
Change-Id: I7f161544219a86f7d2024ed0cae8910dc7d4a3ba
bkr system-status command

Bug: 1037592
Change-Id: I5d48f7253053fe39d25a61e8d48aaf9d6635d39e
Subcommand man page generation: Use app.srcdir

Do not use relative path in 1c02542.

Change-Id: I46630dae8e96b0071e33b2b94f307640bbe33d58
Append 'UTC' to time representations returned by bkr system-status

Change-Id: I8b1d32c174e1ed501ccfbf5b9b826dc7411090bc
Merge branch 'release-0.15' into develop