Resized FormDeleteBranch and updated localization

Change-Id: I015d514661fcc8d0ae17c5d6746155832f4ad5b6
Added ProxySwitcher localization and German translation

Change-Id: I28d5dfd7962e672f7ff7bc83b0b7121ea7c113c5
Enlarged FormCheckoutRevision and updated localization

Change-Id: I335bced964257e8518b2dd4af4776bd6988e52da
Updated German translation for changed English strings removing unfinished entries and OldSource

Change-Id: I8dca770b8d0560c20590aaaa4d45fdf414ea7b75
Enlarged buttons for localization on FormResolveConflicts and translated parameter help in ScriptsSettingsPage plus updated German translated

Change-Id: Idfb67a1ddf009cf16b877afd2c8ca8042fd53796
Merge pull request #2115 from Copro/master

Updated some more forms and made more items localizable