pullrequest: just replace children of other_ref when other_repo changes

We were inserting a full select statement as innerHTML of a select and would
thus get nested select statements. IE did not render that correctly ... and
other browsers did strange things.

Instead we now create a in memory DOM object and move the optgroups. After
appending children to the selector we have to set selectedIndex on all
browsers.

vcs: fix typo in MercurialChangeset.committer

It has apparently never been used and could perhaps just be removed. Especially
because it also seems suspicious that it will do safe_unicode twice.

compare/pullrequest: introduce merge parameter

This is more correct and flexible than the old way of looking on same/different
repo.

pullrequest: pullrequest from changelog view

It seems like it didn't work ... perhaps because I broke it. But now we clean
it up and make it work:

Use rev_end as the revision to merge. We don't know where to merge ... but
start_rev cannot be used for that.

This might to some extent have been working before ... but we prefer to clean
it up and start over again when the normal merge workflow is fully working.

fixed issue with renaming repos group together with changing parents with multiple nested trees
added regresion tests for such cases

fixes #762, LDAP and container created users are now activated based on
the registration settings in permissions

moved out password reset tasks from celery, it doesn't make any sense to keep them there, additionally they are broken
in when executing _(), and url() calls. This fixes issue #572

changelog: "compare fork with parent" should only be shown when no changesets selected

It do not use the selected changeset - showing the option is confusing.

Greying out would perhaps be better ... but the button is already grey.

css: consistent spacing around :

sed -i 's/^\( [^: ]*\) *: */\1: /g' rhodecode/public/css/style.css

css: consistent space before {

sed -i 's,\([^ ]\){,\1 {,g' `find -name '*.css'`

fixed issue with renaming repos group together with changing parents with multiple nested trees
added regresion tests for such cases

better detection of deleting groups with subgroups inside.
Added less strict checks on delete group routing so we can delete zombie groups
(those that are not in filesystem but in DB)

compare: cleanup of as_form handling

as_form is only used when loaded 'partial' from pullrequest.html. Including it
in the 'Detailed compare view' url did thus not do any harm.

as_form is never used in pullrequest_show.html or compare_diff.html and it is
thus never used together with swap_url ... which is why the wrong
'as_form=None' or 'as_form=False' in urls didn't do any harm.

css: linear-gradient do not have 'top' but 'to bottom'

- according to https://developer.mozilla.org/en-US/docs/CSS/linear-gradient

css: opacity is a float and cannot be px

Undoing parts of 20940ddb5f4d.

css: drop -moz-border-radius and -moz-box-shadow

Firefox 4.0 added support for border-radius and box-shadow. Firefox 13.0 and
later emits errors for -moz-border-radius. There is thus no reasons to keep the
old styles.

notifications changes
- closing pull requests will give notification about it
- more detailed notifications about commenting on changesets and pull requests

in case we turn on celery, and connection fails, set the global flag CELERY_ON to false, helps with odd
problems during this state

added same switch to logic for tags and bookmarks containing /.
added "at" GET params to visualize switching for revisions with /

switch to branch: handle slashes in branch names

In git, having slashes in branch names are not uncommon.

We cannot use a branch name with slashes in the url, so in that case, we
use the changeset id instead like we already do for tags and bookmarks.

Fixes #654

Update changeset cache should use non-cache version of repo if given attribute is empty, it's easier to controll how changesets are udpated
The quick update logic in base controller get's cached version and updates, while any other call will use non-cached version

iterate over repos groups for bool() calls to actually work on it.
fixes some issues with correctly displaying if there are no groups you have permission to.

further cleanup of UsersGroup

Renaming some names ... but trying not to change API or database scheme.