[DOC] Adjusted README.md to match future extension split
[TASK] Avoid adding potentially unused default FCE tab
[TASK] Fixed a label in order to unify content type selector options
[TASK] Port elements to EXT:fluidcontent_bootstrap and EXT:fluidcontent_fed
[TASK] Changed state to "stable"
[TASK] Remove suggestion of EXT:fluidwidget
[TER] 2.1.0
[TASK] Changed extension description
[BUGFIX] Don't shutdown GLOBALS exec time, apparently makes 6.0 crash