support other analytic systems then just Google Analytics

Fallback to Google Analytics code if the string starts with "UA-"

diff: consistently use a=base=ancestor and b=changes in compare and PR

Some additional fixes to the previous change.

diff: rename template values for org and other for compare and PR

sed -i -e 's,\<\(c\.\(default_\)\?\)org_,\1a_,g' -e 's,\<\(c\.\(default_\)\?\)other_,\1cs_,g' kallithea/controllers/compare.py kallithea/templates/compare/compare_cs.html kallithea/templates/compare/compare_diff.html
sed -i -e 's,\<\(c\.\(default_\)\?\)org_,\1cs_,g' -e 's,\<\(c\.\(default_\)\?\)other_,\1a_,g' kallithea/controllers/pullrequests.py kallithea/templates/pullrequests/pullrequest.html kallithea/templates/pullrequests/pullrequest_show.html kallithea/templates/changeset/diff_block.html

Renaming it differently for compare and PR finally fixes some issues with diffs
and links pointing at wrong revisions and repos - no more whac-a-mole.

pull requests: load repo branch info on demand after changing repo

Visiting a lot of repositories for no reason takes time.

graph: handle failing canvas creation

Seen randomly when PR had "No changesets" or when reloading while the changelog
+ graph was loading.

pull requests: rework handling of comments and texts when voting and closing

Close did not leave any records - now it does.

Status changes without comments repeated the status change in text - now it
doesn't repeat itself.

https: introduce https_fixup config setting to enable the special https hacks

Without https_fixup, correctly configured WSGI systems work correctly.

The https_fixup middleware will only be loaded when enabled in the configuration.

notifications: fix threading - use line number

TODO: Use a more stable link, something that includes the filename.

urls: introduce canonical_url config setting

All URLs that are shown or persisted or emailed will use this instead of the
current url.

This is convenient when the server has multiple names - for instance when
transitioning from one protocol or domain or hostname to another.

hg: optimize get_ref_revision

Avoid expensive branch(x) iterating over whole repo just to take max.

old style: better display of multiple parents/children in changeset view - don't truncate

This might introduce some rendering artifacts instead of truncating. That will
be addressed when the styling is reworked from scratch.

auth: unauthenticated users do not have full_name_or_username - show login box instead

AuthUser is only fully populated after it has been loaded with db fields ...
but that only happens for authenticated users. Anonymous users could thus
trigger a crash.

pull request: fail on form errors - don't redirect

The error page might not be pretty but it is very usable - the user can go back and fix the problem.

pull requests: wrap long lines in diff instead of truncating them

A horizontal scrollbar would not be a convenient solution.

indexer: rework get_node to handle alternative path element separators

Problem seen on Windows by Dominik Ruf.

pull requests: use formencode.Set for initial reviewer list

This works with formencode 1.2.6 too.

This also makes it possible to have an empty initial reviewer list.

pull requests: make it possible to add comments to closed PRs

You can close a PR but you cannot close the discussion of it!

mention: improve pattern for matching multiple mentions

It would (silently as always) fail to recognize some @mentions - especially
when only separated by a single whitespace char.

vcs: replace recursive implementation of prev&next with iterative

It was recursing over the repo and could give "maximum recursion depth
exceeded".

The implementation is still inefficient.

db_manage: don't ask for confirmation before using symlink - just warn

Mostly a backout of bbaf0b86a1fe ... but we still use the normalized path.

Escape shell command parts for Git backend

Python 2.x uses pipes.quote and Python 3.3+ uses shlex.quote in
GitRepository._run_git_command()

pull requests: fix same git repository pull-request issue

Currentry, Kallithea can not create pull-request from same git repository.
Because, ancestor variable is not initialized when create pull-request from same git repository.

This patch find ancestor by `git merge-base` command and initialize it.

remove unused javascript

.diff-menu-activate is removed in 929fc8d926d5

javascript: replace YUE.onDOMReady with $(document).ready

Different execution order of YUE.onDOMReady and $(document).ready makes it hard to do gradually.

notifications: insert 'References' mail headers to help MUA threading

gmail is however fubar.

helpers: user email can be unset

Check for not being empty, not for ''.
Also, don't call person() with email, as it can't be caught properly.

compare: introduce .cs_repo as the repo for .cs_changes - sometimes it is org, sometimes other

Influences pull request creation, display and compare.