style: use panel, panel-heading, panel-title, panel-body and settings

This imply lots of tweaking of header handling and panel spacing.

Not converted yet: codeblock code-header code-body.

Based on work by Dominik Ruf.

style: introduce h2 h3 h4 h5 for emphasis and drop some explicit styling

Based on work by Dominik Ruf.

style: introduce "clearfix" class where the Bootstrap migration will need it

Based on work by Dominik Ruf.

style: in preparation for bootstrap, replace kallithea title class with bootstrap compatible panel-heading

This is a subset of a bigger changeset. The subset was extracted by Mads Kiilerich, mostly by:

sed -i 's,<div class="title\>,<div class="panel-heading,g' `hg mani`
sed -i 's,\<div\.title\>,div.panel-heading,g' kallithea/public/css/style.css

style: in preparation for bootstrap, replace kallithea box with bootstrap compatible panel

This is a subset of a bigger changeset. The subset was extracted by Mads Kiilerich, mostly by:

sed -i \
-e 's,<div\(.*\) class="box",<div\1 class="panel panel-primary",g' \
`hg mani`

pull requests: inline pullrequest_show_my_data

Remove unnecessary "abstraction".

pullrequest overview: remove custom handling of 'my pullrequests'

Re-use the same displaying code for the 'my pullrequests' overview as for
the repository pullrequests overview. Remove the now unused CSS styling as
well.

This removes the 'delete' button on the author's pullrequests. One could
argue whether the pullrequest overview is the right place for this button,
while it does not appear on the pull request page itself.

style: add class 'normal-indent' instead of repeated explicit margins

Add a new CSS class for the standard indentation inside the main box,
instead of repeating 'style="..."' statements on the relevant elements.

Ideally, this class should not exist as the necessary padding would be added
to the main box itself, but reworking this is a bigger exercise (to be done
later).

my pullrequests: line up controller/template handling with repo pullrequests

Currently, the data for 'my pullrequests' is loaded dynamically through
ajax, unlike the way 'repository pullrequests' are loaded (statically).

As there is no good reason to have both treated differently, and as dynamic
loading of 'my pullrequests' is not really needed, rework the handling of
the 'my pullrequests' page with the 'repository pullrequests' page.

This includes lining up the 'show closed pull requests' checkbox/link.

This also fixes issue #102 ('my pull requests' when not logged in:
incorrect handling of login).

templates: move site branding in page title to base template

Instead of repeating the same three lines in each and every template, move
it to the base template.

javascript: use jQuery for ypjax and rename to asynchtml

The container id is replaced with a $target jQuery array.