reinit updates (#500)

* working on re-init when you create a tab.  some refactoring of existing reinit to make the messaging clearer.  auto-connect, etc.

* working to remove the 'default' shell states out of MShellProc.  each tab should have its own state that gets set on open.

* refactor newtab settings into individual components (and move to a new file)

* more refactoring of tab settings -- use same control in settings and newtab

* have screensettings use the same newtab settings components

* use same conn dropdown, fix classes, update some of the confirm messages to be less confusing (replace screen with tab)

* force a cr on a new tab to initialize state in a new line.  poc right now, need to add to new workspace workflow as well

* small fixups

* remove nohist from GetRawStr, make const

* update hover behavior for tabs

* fix interaction between change remote dropdown, cmdinput, error handling, and selecting a remote

* only switch screen remote if the activemainview is session (new remote flow).  don't switch it if we're on the connections page which is confusing.  also make it interactive

* fix wording on tos modal

* allow empty workspaces. also allow the last workspace to be deleted.  (prep for new startup sequence where we initialize the first session after tos modal)

* add some dead code that might come in use later (when we change how we show connection in cmdinput)

* working a cople different angles.  new settings tab-pulldown (likely orphaned).  and then allowing null activeScreen and null activeSession in workspaceview (show appropriate messages, and give buttons to create new tabs/workspaces).  prep for new startup flow

* don't call initActiveShells anymore.  also call ensureWorkspace() on TOS close

* trying to use new pulldown screen settings

* experiment with an escape keybinding

* working on tab settings close triggers

* close tab settings on tab switch

* small updates to tos popup, reorder, update button text/size, small wording updates

* when deleting a screen, send SIGHUP to all running commands

* not sure how this happened, lineid should not be passed to setLineFocus

* remove context timeouts for ReInit (it is now interactive, so it gets canceled like a normal command -- via ^C, and should not timeout on its own)

* deal with screen/session tombstones updates (ignore to quite warning)

* remove defaultfestate from remote

* fix issue with removing default ris

* remove dead code

* open the settings pulldown for new screens

* update prompt to show when the shell is still initializing (or if it failed)

* switch buttons to use wave button class, update messages, and add warning for no shell state

* all an override of rptr for dyncmds.  needed for the 'connect' command (we need to set the rptr to the *new* connection rather than the old one)

* remove old commented out code

wavesrv/pkg/cmdrunner/resolver.go

@@ -41,7 +41,7 @@ type ResolvedRemote struct {
 	MShell      *remote.MShellProc
 	RState      remote.RemoteRuntimeState
 	RemoteCopy  *sstore.RemoteType
-	ShellType   string
+	ShellType   string // default remote shell preference
 	StatePtr    *sstore.ShellStatePtr
 	FeState     map[string]string
 }
@@ -488,8 +488,8 @@ func ResolveRemoteFromPtr(ctx context.Context, rptr *sstore.RemotePtrType, sessi
 		} else {
 			if ri == nil {
 				rtn.ShellType = msh.GetShellPref()
-				rtn.StatePtr = msh.GetDefaultStatePtr(rtn.ShellType)
-				rtn.FeState = msh.GetDefaultFeState(rtn.ShellType)
+				rtn.StatePtr = nil
+				rtn.FeState = nil
 			} else {
 				rtn.StatePtr = &sstore.ShellStatePtr{BaseHash: ri.StateBaseHash, DiffHashArr: ri.StateDiffHashArr}
 				rtn.FeState = ri.FeState