fixed #387 : make editable by default and check rename function for read only notebook
fixed #737 : select asset name text except extension
fixed #737 : excluding the file-extension
search assets and comments
Search includes assets and comments content
fixed #559 : selecting existing asset if same name used for renaming
fixed #559 : verified using jshint
## FIXED #485: search on comments content
fixed #387 : rename with existing asset name
fixed #737 : rename with existing asset name
more bits for NEWS
focus default button for fatal dialog

fixes #582
removed asset replace code
fixed #737 : resetting asset name on using existing name
remove cruft

and stop the edit blink
closes #747
Merge branch 'pr/747' into develop

Conflicts:
	htdocs/js/rcloud_bundle.min.js
Merge branch 'pr/752' into develop
remove dead (even more crazy complicated) code
fix disabling search if not available
reopen notebooks in the narrowest scope available

i.e. if it's starred, opened it in Notebooks I Starred
else if it belongs to someone I starred, open in People I Starred
only open in All Notebooks if available in neither other root

fixes #677