Creation of a basic template

It is not supposed to be used... but it could. This is a minimalistic theme
(about 725 lines). In the future, it could be great to based all official
themes on this one.

See #320
Update template

- Logical structure
- Add Comments
- Delete some rules

See #320
Improve titles in bar title (template)

Titles can be extended on new line(s) when :hover happens
Fix https://github.com/marienfressinaud/FreshRSS/issues/385
See https://github.com/marienfressinaud/FreshRSS/issues/320
Fix titles:hover on mobile

See https://github.com/marienfressinaud/FreshRSS/issues/385 and
https://github.com/marienfressinaud/FreshRSS/issues/320
Improve template

Font sizes are mainly in em instead of px
Some widths and heights have disapeared or changed

See https://github.com/marienfressinaud/FreshRSS/issues/320
And https://github.com/marienfressinaud/FreshRSS/issues/324
Merge branch 'dev' into 320-template
Fix template

Few improvements
Add theme Origine2

- Based on the new template
- Should remplace Origine later
- It is still not finished, there are a lot to do
Fix sizes in Origine2

Dropdowns and buttons had not homogeneous font-sizes
See https://github.com/marienfressinaud/FreshRSS/issues/320
Fix theme Origine2

It should be equivalent to Origine (modulo some improvements)

See https://github.com/marienfressinaud/FreshRSS/issues/320
Fix theme Origine2 and template

See https://github.com/marienfressinaud/FreshRSS/issues/320
Fix bug openNotification function (Origine2)

Add class "notification"
Update themes

- Fix some Webkit problems
- Change render of #bigMarkAsRead
Rename Origine2 into Origine (v0.2)

- Remove template files (will be moved into another repository later)
- Rename Origine2 into Origine
- Change version (0.1 -> 0.2)

See https://github.com/marienfressinaud/FreshRSS/issues/320
Merge branch 'dev' into 320-template
Improve toggle-password

Add class "active" to button which reveals the password and remove it
when revealing is terminated
Add an option to choose content width

- 4 options: thin, medium, large and no limit
- Thin is by default
Update themes Dark and Flat (notifications and icons)
Merge branch '320-template' into dev