update:gtk:use user-configured units in Points of Interest (POI) window. (#557)

* 1) Changed the translation string for "Distance(m)" from "" to "Distance". Rational: the "m" is ambiguous, it could be meters or miles. However, in the POI context, feet are more likely than miles. So take it out entirely. I did it this way rather than run sed on the entire collection of po input files.

2) The display code sorts the entries by distance. It has no way of knowing if "5" is five miles or five feet. So we leave the distances in feet or meters (depending on the setting for imperial). Allowing kilometers or miles might be a future enhancement.

3) See bug 556 (https://github.com/navit-gps/navit/issues/556). Rather than remove the spurious one as part of this fix, I will leave that to later. But both now have the same English "translation", "Select a search radius from screen center". This hides the problem, at least from English users. This affects all four en_*.po.in files.

4) Someone who knows more than I do about the translation strings might have a better idea. Particularly, is there a graceful way to indicate the input units, either miles or kilometers?

	modified:   navit/gui/gtk/gui_gtk_poi.c
	modified:   po/en.po.in
	modified:   po/en_AU.po.in
	modified:   po/en_CA.po.in
	modified:   po/en_GB.po.in

* Made it prettier. Reformatted one commented and tabified the thing.

	modified:   navit/gui/gtk/gui_gtk_poi.c

* Replaced one of the two source strings for the PoI window prompt for inputting the search radius. Pull Request 557.

	modified:   navit/gui/gtk/gui_gtk_poi.c
	modified:   po/af.po.in
	modified:   po/ar.po.in
	modified:   po/ast.po.in
	modified:   po/be.po.in
	modified:   po/bg.po.in
	modified:   po/bs.po.in
	modified:   po/ca.po.in
	modified:   po/ckb.po.in
	modified:   po/cs.po.in
	modified:   po/cy.po.in
	modified:   po/da.po.in
	modified:   po/de.po.in
	modified:   po/de_CH.po.in
	modified:   po/el.po.in
	modified:   po/en.po.in
	modified:   po/en_AU.po.in
	modified:   po/en_CA.po.in
	modified:   po/en_GB.po.in
	modified:   po/eo.po.in
	modified:   po/es.po.in
	modified:   po/et.po.in
	modified:   po/eu.po.in
	modified:   po/fa.po.in
	modified:   po/fi.po.in
	modified:   po/fil.po.in
	modified:   po/fo.po.in
	modified:   po/fr.po.in
	modified:   po/fr_CH.po.in
	modified:   po/fy.po.in
	modified:   po/gl.po.in
	modified:   po/he.po.in
	modified:   po/hi.po.in
	modified:   po/hr.po.in
	modified:   po/hu.po.in
	modified:   po/id.po.in
	modified:   po/it.po.in
	modified:   po/ja.po.in
	modified:   po/jv.po.in
	modified:   po/kk.po.in
	modified:   po/kn.po.in
	modified:   po/ko.po.in
	modified:   po/ku.po.in
	modified:   po/lb.po.in
	modified:   po/lt.po.in
	modified:   po/lv.po.in
	modified:   po/mk.po.in
	modified:   po/ml.po.in
	modified:   po/mn.po.in
	modified:   po/mr.po.in
	modified:   po/nb.po.in
	modified:   po/nds.po.in
	modified:   po/nl.po.in
	modified:   po/nn.po.in
	modified:   po/pl.po.in
	modified:   po/pms.po.in
	modified:   po/pt.po.in
	modified:   po/pt_BR.po.in
	modified:   po/ro.po.in
	modified:   po/ru.po.in
	modified:   po/sc.po.in
	modified:   po/si.po.in
	modified:   po/sk.po.in
	modified:   po/sl.po.in
	modified:   po/sq.po.in
	modified:   po/sr.po.in
	modified:   po/sv.po.in
	modified:   po/sw.po.in
	modified:   po/ta.po.in
	modified:   po/te.po.in
	modified:   po/th.po.in
	modified:   po/tr.po.in
	modified:   po/uk.po.in
	modified:   po/ur.po.in
	modified:   po/vi.po.in
	modified:   po/zh_CN.po.in
	modified:   po/zh_HK.po.in
	modified:   po/zh_TW.po.in

1 files changed, 1 insertions, 1 deletions

diff --git a/po/mr.po.in b/po/mr.po.in
index 69acbd449..9fca9a747 100644
--- a/po/mr.po.in
+++ b/po/mr.po.in
@@ -1663,7 +1663,7 @@ msgstr ""
 msgid "Shopping"
 msgstr ""
 
-msgid "Distance from screen center (km)"
+msgid "Select a search radius from screen center"
 msgstr ""
 
 #, c-format