Remove spaceline configuration

- Fix wrong function names and variables
- Move export folder out of source tree, so we don't export the exports
- Add jpg to source image files

When `auto-dictionary-mode` is activated, it tries to guess the
dictionary no matter if a dictionary was manually selected before, what
is annoying when toggling spell-checking off/on. To avoid this, a piece
of code was added to the spell-checking toggle to select the
buffer-local dictionary if it was set.

As mentioned by lunaryorn, this part of code should also be called when
flyspell is enabled/disabled by an other mean than the spacemacs toggle.
This commit move the code to the `auto-dictionary-mode-hook` for this
purpose.

Some users complained about slowness when opening files due to
spell-checking being activated. This commit revert to old behaviour
checking only the words under the cursor and not the whole buffer.

* In the :config section, the parameters cannot easily be overridden by
  the user.

Use progn forms and unify setq expressions.

Fixes syl20bnr#335

Add the `lorem-ipsum` package to insert text, and bind it to:

* `xil`: lorem-ipsum-insert-list
* `xip`: lorem-ipsum-insert-paragraphs
* `xis`: lorem-ipsum-insert-sentences

`x` as it's text related, and `l` for `list, `p` for `paragraph` and `s`
for sentences.

This a rarely used key binding so we can nest it a little bit more and
free some key bindings in the `text insert` namespace.

Allow to use 'relative as value for the dotspacemacs-global-line-numbers
setting. This enable relative global line numbers as it is a common
usage.

I feel that it is not needed because it makes not a lot of sense to
have it non global since it is a dotfile variable.

Also remove ' from the docstring for consistency.

See https://github.com/ensime/ensime-emacs/pull/263

If `macrostep-mode` is entered separate of micro-state, there is no
normal mode mapping that will exit it.

Useful when you don't desire filtering helm buffer but still want to
navigate.

Can't check simply for executable, as `helm-locate-set-command` is
always run.

Missing from 02fb2bd after rebase

…o perspectives-fix