Fix #2817 - Move translation language folder in a subfolder of view

Support of utf8mb4

Fix Issue #2823 - Ugly scrollbars in oembed iframes and broken resizing

[Hotfix] Fix #2816 - [Admin] Unable to save config items present in .htconfig.php but not in DB

- Fix _resizeIframe function, shorten the timeout between calls
- Simplify the oembed iframe generation code and reduce the minimum
iframe height to 200px
- Add smooth CSS transition for iframe resizing

Fix #2814

- Change all references to language folders

- Move translation folders under `view/lang`

- Fix wrong variable name in Config and PConfig

- If needed, the version control system can be used to restore this code

- [frio] Add a wrapping `a` tag around the notification text
- Add an event listener preventing popup menus to close when they are
themselves clicked

regenerated messages.po

[frio] Fix terms capitalization

We should only use utf8mb4 for dumpsql and new installations

Add HTML entity decoding to browser notifications

- Revert translation term change for "permissions"

- Changed the translation term "permissions" because only frio is using
it
- Changed the vote links style because it is shared with other themes

[frio] Changes to shared post display (width, base font size)

- Use normal font size for shared content

- Added a bottom margin to the shared header
- Removed padding and horizontal margins for the shared content

This reverts commit 0c383ad9ff.

- Added two Bootstrap divisions to the center column

New API /api/friendica/profile/show

New fields for the DFRN protocol (XMPP and Account Type)

DE update to the translation

FR update to the strings, THX Hypolite Petovan

regenerated messages.po to fix typos

correction of typos