pullrequests: show pending reviewer changes again - this time with "(not saved)"

b5795554c2ca lost some of the changes from 00c76c4e019c.

user groups: drop add/remove all buttons

The buttons can easily mess the old selection up and do not add much value
compared to multi select.

paster: fix update_repoinfo command

Less bitrot.

javascripts: replace YUI with jquery in kallithea/templates/pullrequests/pullrequest_show.html

This patch removes the '.show-inline-comments' event handler.
'.show-inline-comments' does not exist in diff_block.diff_block_simple,
it exists in diff_block.diff_block.

diff: don't split lines on bare CR as python splitlines do

The line count from the @@ lines and the actual count would get out of sync and
an incomplete diff would be shown.

This is slower than native splitlines ... but that is what it takes to handle
it correctly. (Except that we perhaps could use .split('\n') and patch the
result ...)

diff: eat trailing tabs in ---/+++ lines of diffs

There is usually no date in the diffs we parse but there might still be the tab
that was used as separator between filename and date.

The a_file and b_file entries are usually not used ... but nice to have them
right.

diff: fix diff of renamed files with whitespace in their names

Before, header parsing would fail.

diff: preserve leading space on empty lines - don't match in re if we don't plan to replace

Fix invisible bug from 7c094db329b3, exposed by future exact parsing of diffs.

Translated using Weblate (Russian)

Currently translated at 78.9% (850 of 1077 strings)

Translated using Weblate (German)

Currently translated at 26.5% (286 of 1077 strings)

Translated using Weblate (German)

Currently translated at 23.2% (250 of 1077 strings)

text_align_left.png: replace icon-resize-vertical with icon-align-left

The color needed to be tweaked since the icon is text base.

application_form_edit.png: use new icon-pencil font

A quick search revealed that some old css code was never used, so it was
removed.

icon-remove: use new icon-minus-circled instead

To remove the css that set the background of the submit input (h.submit), the
element needed to be changed to <button>.

private_repo.png: use new icon-lock font

A quick search revealed that some old css code was never used, so it was
removed.